Blumenthal, Betsy (October 3, 2023). "Aman New York: First In". Condé Nast Traveler. Archived from the original on June 14, 2024. Retrieved June 14, 2024.
columbia.edu
rerecord.library.columbia.edu
"Mr. Edward Harriman..."(PDF). The Real Estate Record: Real Estate Record and Builders' Guide. Vol. 79, no. 2038. April 6, 1907. p. 296. Archived(PDF) from the original on January 16, 2021. Retrieved June 9, 2020 – via columbia.edu.
"Mr. August Heckscher and His Purchase". The Real Estate Record: Real estate record and builders' guide. Vol. 90, no. 2336. December 21, 1912. p. 1158. Archived from the original on June 16, 2024. Retrieved June 21, 2024 – via columbia.edu.
"August Heckscher Adds to Holdings". The Real Estate Record: Real estate record and builders' guide. Vol. 101, no. 2604. February 9, 1918. p. 172. Archived from the original on June 16, 2024. Retrieved June 21, 2024 – via columbia.edu; "Heckscher Buys Again". New York Herald. February 4, 1918. p. 12. Archived from the original on June 16, 2024. Retrieved June 16, 2024; "Fifth Avenue Plot Sold". New-York Tribune. February 3, 1918. p. 5. ISSN1941-0646. ProQuest575805388.
Bender, Courtney (2021). "Mrs. Rockefeller's Exquisite Corpse". Comparative Studies in Society and History. 63 (4): 788–789. doi:10.1017/S0010417521000244. ISSN0010-4175.
"Heckscher Building, New York". Architecture and Building. Vol. 54, no. 2. February 1922. pp. 17–18. Archived from the original on June 25, 2024. Retrieved June 21, 2024.
"Seasons of gilt". Daily News. December 23, 1982. p. 111. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
"August Heckscher Adds to Holdings". The Real Estate Record: Real estate record and builders' guide. Vol. 101, no. 2604. February 9, 1918. p. 172. Archived from the original on June 16, 2024. Retrieved June 21, 2024 – via columbia.edu; "Heckscher Buys Again". New York Herald. February 4, 1918. p. 12. Archived from the original on June 16, 2024. Retrieved June 16, 2024; "Fifth Avenue Plot Sold". New-York Tribune. February 3, 1918. p. 5. ISSN1941-0646. ProQuest575805388.
"Heckscher Suit Asks 10 Million Of Rockefeller: Cites Unfair Competition; Calls Midlown Center a Frankenstein Monster". New York Herald Tribune. January 11, 1934. p. 1. ISSN1941-0646. ProQuest1242834815; Warren, Carl (January 13, 1934). "Another Lease Spurs Attack on Radio City". Daily News. p. 5. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Moritz, Owen (February 27, 1986). "Marcos unloading land". Daily News. p. 103. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Carey, Pete (March 11, 1986). "Ferdy's 30M scheme". Daily News. p. 299. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Rodriguez, Robert F. (May 15, 1983). "Nightlights". The Daily Times. pp. 168, 170, 171, 173, 179. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Shepard, Joan (February 13, 1985). "Developers' lust decried". New York Daily News. p. 119. Archived from the original on June 6, 2021. Retrieved June 6, 2021.
Clarke, Katherine (May 15, 2015). "The Son Also Rises". New York Daily News. Archived from the original on October 25, 2015. Retrieved November 23, 2015.
Horsley, Carter B. (December 10, 1978). "'Tower of Trade,' A Gem of 1921". The New York Times. Archived from the original on August 27, 2022. Retrieved August 27, 2022.
Carmody, Deirdre; Haberman, Clyde (September 22, 1982). "New York Day by Day". The New York Times. ISSN0362-4331. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Guenther, Robert (March 21, 1984). "Landlord's Unusual Response To Rent Controls Stirs Fight". The Wall Street Journal. p. 1. ISSN0099-9660. ProQuest397839076; Fowler, Glenn (January 5, 1983). "Landmark At 40 Wall Is Sold;". The New York Times. ISSN0362-4331. Archived from the original on July 31, 2015. Retrieved June 17, 2024.
Herman, Robin; Johnston, Laurie (January 19, 1983). "New York Day by Day". The New York Times. ISSN0362-4331. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Vogel, Carol (April 2, 1993). "The Art Market". The New York Times. ISSN0362-4331. Archived from the original on June 18, 2024. Retrieved June 18, 2024.
Schiro, Anne-Marie (August 11, 1992). "Patterns". The New York Times. ISSN0362-4331. Archived from the original on June 18, 2024. Retrieved June 18, 2024.
Rothstein, Mervyn (February 27, 1997). "Italian Dressing". The New York Times. ISSN0362-4331. Archived from the original on June 19, 2024. Retrieved June 19, 2024.
"A Brilliant Future for 57th Street: to Be Great Store Centre Shopping Zone of the Highest Class Being Formed in Fifty-seventh Street—No Other Crosstown Thorough-fare in Manhattan Has More Promising Outlook". New-York Tribune. March 28, 1915. p. C1. ISSN1941-0646. ProQuest575358267.
"'Shanty Land' Now Site of $125,000,000 New Construction: Skyscrapers and Shops Have Replaced Homes of 5,000 Squatters in 57th Street". New York Herald Tribune. January 13, 1929. p. D1. ProQuest1111941344.
"C.F. Noyes Gets Skyscraper for Grandchildren: In Partnership With Friend, Pays $5,000,000 for 26-Story Heckscher Building Heckscher Building". New York Herald Tribune. January 16, 1946. p. 32. ISSN1941-0646. ProQuest1331242365.
Clarke, Katherine (June 13, 2019). "A Russian Billionaire's $1.3 Billion Bet on New York's Iconic Crown Building; Vladislav Doronin says three penthouses at his Aman-branded project have sold for more than $325 million, despite a sluggish market and an oversupply of luxury condos". The Wall Street Journal. ISSN0099-9660. ProQuest2712026838.
"The "Zoning Law" in New York: Novel Ties in Skyscrapers". The Manchester Guardian. June 5, 1924. p. 7. ProQuest476884543.
"57th Street To Have New 25-Story Building: Shops on Floors Above Street Level to 13th Story, to Be a Feature". Women's Wear. Vol. 21, no. 93. October 20, 1920. p. 31. ProQuest1666193389.
"East meets New York City: Aman New York is one of the city's most anticipated hotel openings". Toronto Star. July 23, 2022. p. H.7. ProQuest2692988806.
"Whitney Sale Starts Real Estate "Fever": Lets Down Bars for Rush of Business to That Section of Fifth Avenue Rare Chance, Say Experts Oelrichs House Next to Be Sold, It is Reported—speculators Worried by Hidden River". New-York Tribune. December 16, 1912. p. 11. ISSN1941-0646. ProQuest575002429.
"Industrialist Is Putting His Millions Into Gilt-Edge Real Estate; Holds Eleven Big Structures Valued at From $30,000,000 to $35,000,000". New-York Tribune. August 5, 1923. p. C1. ISSN1941-0646. ProQuest1237337842.
"August Heckscher Adds to Holdings". The Real Estate Record: Real estate record and builders' guide. Vol. 101, no. 2604. February 9, 1918. p. 172. Archived from the original on June 16, 2024. Retrieved June 21, 2024 – via columbia.edu; "Heckscher Buys Again". New York Herald. February 4, 1918. p. 12. Archived from the original on June 16, 2024. Retrieved June 16, 2024; "Fifth Avenue Plot Sold". New-York Tribune. February 3, 1918. p. 5. ISSN1941-0646. ProQuest575805388.
"Two Giant Structures and Palatial Theater, Valued at $15,000,000, for 5th Ave". New-York Tribune. December 21, 1919. p. A8. ISSN1941-0646. ProQuest576155078.
"New York to Have Small Addition of Rue de la Paix: French Trade Center Forming in Fifth Ave. Blocks, Between 57th, 59th Sts". New York Herald Tribune. May 20, 1928. p. D2. ISSN1941-0646. ProQuest1113379443.
"Business of George Backer, Who Gave City $100,000,000 Worth of Buildings; Will Be Carried On By Associates: Company Will Be Formed by Samuel Levy, Copartner and Attorney, to Continue Uncompleted Work of the Late Builder; William Backer, Who Will Graduate as an Engineer From Cornell Next Month, Will Take Up Affairs of His Father". New-York Tribune. May 15, 1921. p. A15. ISSN1941-0646. ProQuest576436642.
"Florida Agent Buys 25-Story 5 th Av. Tower: Keyes, of Miami, Takes Heckscher Building at 57th St. Corner". New York Herald Tribune. November 5, 1950. p. C1. ISSN1941-0646. ProQuest1335548364.
"Daily Retailing: Plan To Group Shops In New Heckscher Building: Owners Expect to Have Here an Exclusive Buying Center for Women's Apparel—Objects D'Art and Other Goods Will Give New Impetus to Development of Upper Fifth Avenue". Women's Wear. Vol. 23, no. 30. August 5, 1921. p. 48. ProQuest1665938902.
"Stock Exchange Brokers Get Space in Heckscher Building". New-York Tribune. December 22, 1922. p. 20. ISSN1941-0646. ProQuest576737006.
"Oil Refiners Lease Floor In Heckscher Building". New-York Tribune. July 7, 1922. p. 20. ISSN1941-0646. ProQuest576662877.
"57th Street Taking Place As New Business District: Growth Has Been Almost Over Night Seen as Rich Mine for Retailers — Heckscher Bldg. Among New Structures". Women's Wear. Vol. 25, no. 118. November 20, 1922. p. 33. ProQuest1666220197.
"August Heckscher Dies at 92; Benefactor of Poor Children: German Immigrant Was Minn Executive, Financier and a Leading New York Real Estate Owner; Gave Parks and $5,000,000 Building Characteristic Scene From the Life of a Philanthropist". New York Herald Tribune. April 27, 1941. p. 1. ISSN1941-0646. ProQuest1248452974.
"Joseph's To Be Located On 57th Street: Lease 30,000 Square Feet On 15-Year Lease — Expect To Occupy By Jan. 1, 1925". Women's Wear. Vol. 29, no. 100. October 27, 1924. p. 1. ProQuest1676935689.
"Hadley-Leon Shop, Smartly Decorated, Has Formal Opening: Comprehensive Stock Includes Airy Evening Types Of Chiffon And Lace—Interesting Cottons For Daytime". Women's Wear. Vol. 28, no. 6. January 8, 1924. p. 3. ProQuest1676647833.
"Heckscher Refused 7 Million for Building". New York Herald Tribune. December 9, 1934. p. I1. ISSN1941-0646. ProQuest1221540895.
"W. 53d St. Building Is Leased as Home Of Modern Museum: 5-Story Structure To Be Occupied by May 1; Move Is Part of Bliss Plan". New York Herald Tribune. January 21, 1932. p. 17. ISSN1941-0646. ProQuest1114848138.
"173-Year-Old Concern Rents Fifth Av. Space: William Coulson & Sons Will Locate in Heckscher Building on Fifth Ave". New York Herald Tribune. November 25, 1932. p. 28. ISSN1941-0646. ProQuest1114732911.
"Antique Dealer Adds to Space On 5th Avenue: Symons Organization Takes Large Additional Unit in Heckscher Building". New York Herald Tribune. January 9, 1934. p. 34. ISSN1941-0646. ProQuest1222204369.
"Real Estate: Jewel Dealer Leases Space In 48th Street Universal Pictures Rents Penthouse in the Annex of 730 Fifth Avenue". New York Herald Tribune. April 22, 1935. p. 29. ISSN1941-0646. ProQuest1242903472.
"Exhibition: New York Club Pays Rent and Pleases Artists". Newsweek. Vol. 10, no. 11. September 13, 1937. p. 25. ProQuest1882519616.
"New Bridge Club Rents in Midtown: Shepard Barclay Heads Group to Occupy Floors in the Heckscher Building". The New York Times. March 28, 1934. p. 42. ISSN0362-4331. ProQuest101045255.
"New Luncheon Club Rents on 5th Avenue". New York Herald Tribune. February 26, 1939. p. C1. ISSN1941-0646. ProQuest1243147141.
"Heckscher Suit Asks 10 Million Of Rockefeller: Cites Unfair Competition; Calls Midlown Center a Frankenstein Monster". New York Herald Tribune. January 11, 1934. p. 1. ISSN1941-0646. ProQuest1242834815.
"Heckscher Suit Asks 10 Million Of Rockefeller: Cites Unfair Competition; Calls Midlown Center a Frankenstein Monster". New York Herald Tribune. January 11, 1934. p. 1. ISSN1941-0646. ProQuest1242834815; Warren, Carl (January 13, 1934). "Another Lease Spurs Attack on Radio City". Daily News. p. 5. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
"Foreclosure Suit Is Filed Over Heckscher Building". New York Herald Tribune. December 5, 1934. p. 35. ISSN1941-0646. ProQuest1221537228.
"Parfums Charbert Rents Heckscher Building Space". New York Herald Tribune. April 18, 1944. p. 30. ISSN1941-0646. ProQuest1282891126; "4 Floors Leased by Jewish Board". The New York Times. April 14, 1944. p. 32. ISSN0362-4331. ProQuest106789649.
"Film Concern Leases: New Sales Organization Takes Floor in 730 Fifth Avenue". The New York Times. May 18, 1949. p. 48. ISSN0362-4331. ProQuest105992672.
"Joseph Durst Mystery Man in Heckscher Deal: Fanner of Charles Noyes in Purchase of 25-Story Building, 5th Av., 57th St". New York Herald Tribune. February 8, 1946. p. 23. ISSN1941-0646. ProQuest1284547354.
"Profit Offered For Heckselier Sale Contract: "Cannot Break My Promise to Grandchildren, "Noyes Says in Refusing Fortune". New York Herald Tribune. February 3, 1946. p. C8. ISSN1941-0646. ProQuest1267891293.
Pasztor, Andy (April 10, 1986). "New York Developers Apparently Link Marcos, Wife to Property in Manhattan". The Wall Street Journal. p. B1. ISSN0099-9660. ProQuest397957646.
Selvin, Barbara W. (November 6, 1989). "Commercial Real Estate Marcos Sales Tough Task to Master". Newsday. p. 2. ISSN2574-5298. ProQuest278166916.
Lipman, Joanne (March 6, 1986). "The Landlord's Lot Is Not an Easy One; Ask the Marcoses – Minding New York Property And Its Hired Managers Is Difficult From Manila". The Wall Street Journal. p. 1. ISSN0099-9660. ProQuest398034533.
Guenther, Robert (March 21, 1984). "Landlord's Unusual Response To Rent Controls Stirs Fight". The Wall Street Journal. p. 1. ISSN0099-9660. ProQuest397839076; Fowler, Glenn (January 5, 1983). "Landmark At 40 Wall Is Sold;". The New York Times. ISSN0362-4331. Archived from the original on July 31, 2015. Retrieved June 17, 2024.
Goldberger, Paul (March 4, 1983). "For Some, Lights on a 5th Avenue Corner Are an Irritation". The New York Times. p. C28. ISSN0362-4331. ProQuest122292597.
"Cardin U.S.A. Moving Into Crown Building". Women's Wear Daily. Vol. 151, no. 46. March 7, 1986. p. 13. ProQuest1445599430.
Behen, Madonna (December 1, 1989). "Artium Opens Gallery Of Jewelry In Manhattan". Women's Wear Daily. Vol. 158, no. 104. p. 10. ProQuest1445589400.
Moin, David (February 13, 1989). "57th And Fifth: The Street Is Paved With Gold: The Gilding Of 57th And Fifth". Women's Wear Daily. Vol. 151, no. 30. pp. 1, 4, 5. ProQuest1445726384.
Bivins, Larry (February 28, 1986). "Bernstein Brothers: Killer B's". Newsday. p. 3. ISSN2574-5298. ProQuest285254349; Lipman, Joanne (February 25, 1986). "Three Buildings Linked to Marcos May Change Hands: Option Calls for Purchase Of New York Properties At Price of $2". The Wall Street Journal. p. 2. ISSN0099-9660. ProQuest135113247.
Grant, Peter (May 1, 1989). "New Twists in Battle for Marcos' Spoils". Crain's New York Business. Vol. 5, no. 18. p. 23. ProQuest219147299.
Berkowitz, Harry; Selvin, Barbara W. (February 22, 1989). "Marcos Properties on Block Manila 'auctions' city sites". Newsday. p. 7. ISSN2574-5298. ProQuest278075383.
Lowenstein, Roger (November 17, 1988). "Khashoggi Loses Round in Claim To 3 Marcos-Related Properties". The Wall Street Journal. p. 1. ISSN0099-9660. ProQuest398066249.
Barsky, Neil (February 22, 1989). "Philippines Sets Sale of Buildings Marcos Owned". Wall Street Journal. p. 1. ISSN0099-9660. ProQuest398089675.
"New York Crown Building Auctioned at $93.6 Million". The Wall Street Journal. February 11, 1991. p. B5A. ISSN0099-9660. ProQuest398215049.
Pacelle, Mitchell (February 8, 1991). "Crown Building's Auction May Define Extent of New York Real Estate Decline". The Wall Street Journal. p. B7C. ISSN0099-9660. ProQuest135537286.
Clarke, Katherine (May 15, 2015). "He's a Big Deal Again an Empire's in Play as Spitzer Calls the Shots". New York Daily News. p. 1. ISSN2692-1251. ProQuest1680982883.
Edelson, Sharon (July 17, 2017). "For Rent: Have rents peaked? Is the worst over or will there be more pain? A correction is seen as bringing stability to the market". Women's Wear Daily. pp. 1, 6–7. ProQuest2196329026.
"Pyramid Skyscrapers Liked by New York Newspapers: "Will Become Ear-marks of Father Knickerbocker's City Beautiful," According to One Critic". Courier-Journal. November 13, 1921. p. B7. ProQuest1019155359.
Corbett, Harvey W. (June 8, 1921). "High Buildings on Narrow Streets: Being Extracts From a Paper Delivered Before the Fifty-fourth Annual Convention of the American Institute of Architects Planning High Buildings". The American Architect. Vol. 119, no. 2369. p. 608. ProQuest124688563.
Dilakian, Steven; Wall, Sheridan (March 26, 2024). "Aman New York Nabs $50M Deal". The Real Deal. Archived from the original on June 14, 2024. Retrieved June 14, 2024.
"Mr. Edward Harriman..."(PDF). The Real Estate Record: Real Estate Record and Builders' Guide. Vol. 79, no. 2038. April 6, 1907. p. 296. Archived(PDF) from the original on January 16, 2021. Retrieved June 9, 2020 – via columbia.edu.
Horsley, Carter B. (December 10, 1978). "'Tower of Trade,' A Gem of 1921". The New York Times. Archived from the original on August 27, 2022. Retrieved August 27, 2022.
"Heckscher Building, New York". Architecture and Building. Vol. 54, no. 2. February 1922. pp. 17–18. Archived from the original on June 25, 2024. Retrieved June 21, 2024.
Blumenthal, Betsy (October 3, 2023). "Aman New York: First In". Condé Nast Traveler. Archived from the original on June 14, 2024. Retrieved June 14, 2024.
"Mr. August Heckscher and His Purchase". The Real Estate Record: Real estate record and builders' guide. Vol. 90, no. 2336. December 21, 1912. p. 1158. Archived from the original on June 16, 2024. Retrieved June 21, 2024 – via columbia.edu.
"August Heckscher Adds to Holdings". The Real Estate Record: Real estate record and builders' guide. Vol. 101, no. 2604. February 9, 1918. p. 172. Archived from the original on June 16, 2024. Retrieved June 21, 2024 – via columbia.edu; "Heckscher Buys Again". New York Herald. February 4, 1918. p. 12. Archived from the original on June 16, 2024. Retrieved June 16, 2024; "Fifth Avenue Plot Sold". New-York Tribune. February 3, 1918. p. 5. ISSN1941-0646. ProQuest575805388.
"Heckscher Suit Asks 10 Million Of Rockefeller: Cites Unfair Competition; Calls Midlown Center a Frankenstein Monster". New York Herald Tribune. January 11, 1934. p. 1. ISSN1941-0646. ProQuest1242834815; Warren, Carl (January 13, 1934). "Another Lease Spurs Attack on Radio City". Daily News. p. 5. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Carey, Pete (March 11, 1986). "Ferdy's 30M scheme". Daily News. p. 299. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Carmody, Deirdre; Haberman, Clyde (September 22, 1982). "New York Day by Day". The New York Times. ISSN0362-4331. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Guenther, Robert (March 21, 1984). "Landlord's Unusual Response To Rent Controls Stirs Fight". The Wall Street Journal. p. 1. ISSN0099-9660. ProQuest397839076; Fowler, Glenn (January 5, 1983). "Landmark At 40 Wall Is Sold;". The New York Times. ISSN0362-4331. Archived from the original on July 31, 2015. Retrieved June 17, 2024.
Rodriguez, Robert F. (May 15, 1983). "Nightlights". The Daily Times. pp. 168, 170, 171, 173, 179. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Herman, Robin; Johnston, Laurie (January 19, 1983). "New York Day by Day". The New York Times. ISSN0362-4331. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
Shepard, Joan (February 13, 1985). "Developers' lust decried". New York Daily News. p. 119. Archived from the original on June 6, 2021. Retrieved June 6, 2021.
Vogel, Carol (April 2, 1993). "The Art Market". The New York Times. ISSN0362-4331. Archived from the original on June 18, 2024. Retrieved June 18, 2024.
Schiro, Anne-Marie (August 11, 1992). "Patterns". The New York Times. ISSN0362-4331. Archived from the original on June 18, 2024. Retrieved June 18, 2024.
Rothstein, Mervyn (February 27, 1997). "Italian Dressing". The New York Times. ISSN0362-4331. Archived from the original on June 19, 2024. Retrieved June 19, 2024.
Clarke, Katherine (May 15, 2015). "The Son Also Rises". New York Daily News. Archived from the original on October 25, 2015. Retrieved November 23, 2015.
Dilakian, Steven; Wall, Sheridan (March 26, 2024). "Aman New York Nabs $50M Deal". The Real Deal. Archived from the original on June 14, 2024. Retrieved June 14, 2024.
"A Brilliant Future for 57th Street: to Be Great Store Centre Shopping Zone of the Highest Class Being Formed in Fifty-seventh Street—No Other Crosstown Thorough-fare in Manhattan Has More Promising Outlook". New-York Tribune. March 28, 1915. p. C1. ISSN1941-0646. ProQuest575358267.
"C.F. Noyes Gets Skyscraper for Grandchildren: In Partnership With Friend, Pays $5,000,000 for 26-Story Heckscher Building Heckscher Building". New York Herald Tribune. January 16, 1946. p. 32. ISSN1941-0646. ProQuest1331242365.
Clarke, Katherine (June 13, 2019). "A Russian Billionaire's $1.3 Billion Bet on New York's Iconic Crown Building; Vladislav Doronin says three penthouses at his Aman-branded project have sold for more than $325 million, despite a sluggish market and an oversupply of luxury condos". The Wall Street Journal. ISSN0099-9660. ProQuest2712026838.
"Whitney Sale Starts Real Estate "Fever": Lets Down Bars for Rush of Business to That Section of Fifth Avenue Rare Chance, Say Experts Oelrichs House Next to Be Sold, It is Reported—speculators Worried by Hidden River". New-York Tribune. December 16, 1912. p. 11. ISSN1941-0646. ProQuest575002429.
"Industrialist Is Putting His Millions Into Gilt-Edge Real Estate; Holds Eleven Big Structures Valued at From $30,000,000 to $35,000,000". New-York Tribune. August 5, 1923. p. C1. ISSN1941-0646. ProQuest1237337842.
"August Heckscher Adds to Holdings". The Real Estate Record: Real estate record and builders' guide. Vol. 101, no. 2604. February 9, 1918. p. 172. Archived from the original on June 16, 2024. Retrieved June 21, 2024 – via columbia.edu; "Heckscher Buys Again". New York Herald. February 4, 1918. p. 12. Archived from the original on June 16, 2024. Retrieved June 16, 2024; "Fifth Avenue Plot Sold". New-York Tribune. February 3, 1918. p. 5. ISSN1941-0646. ProQuest575805388.
"Two Giant Structures and Palatial Theater, Valued at $15,000,000, for 5th Ave". New-York Tribune. December 21, 1919. p. A8. ISSN1941-0646. ProQuest576155078.
"New York to Have Small Addition of Rue de la Paix: French Trade Center Forming in Fifth Ave. Blocks, Between 57th, 59th Sts". New York Herald Tribune. May 20, 1928. p. D2. ISSN1941-0646. ProQuest1113379443.
"Business of George Backer, Who Gave City $100,000,000 Worth of Buildings; Will Be Carried On By Associates: Company Will Be Formed by Samuel Levy, Copartner and Attorney, to Continue Uncompleted Work of the Late Builder; William Backer, Who Will Graduate as an Engineer From Cornell Next Month, Will Take Up Affairs of His Father". New-York Tribune. May 15, 1921. p. A15. ISSN1941-0646. ProQuest576436642.
"Florida Agent Buys 25-Story 5 th Av. Tower: Keyes, of Miami, Takes Heckscher Building at 57th St. Corner". New York Herald Tribune. November 5, 1950. p. C1. ISSN1941-0646. ProQuest1335548364.
"Stock Exchange Brokers Get Space in Heckscher Building". New-York Tribune. December 22, 1922. p. 20. ISSN1941-0646. ProQuest576737006.
"Oil Refiners Lease Floor In Heckscher Building". New-York Tribune. July 7, 1922. p. 20. ISSN1941-0646. ProQuest576662877.
"August Heckscher Dies at 92; Benefactor of Poor Children: German Immigrant Was Minn Executive, Financier and a Leading New York Real Estate Owner; Gave Parks and $5,000,000 Building Characteristic Scene From the Life of a Philanthropist". New York Herald Tribune. April 27, 1941. p. 1. ISSN1941-0646. ProQuest1248452974.
Bender, Courtney (2021). "Mrs. Rockefeller's Exquisite Corpse". Comparative Studies in Society and History. 63 (4): 788–789. doi:10.1017/S0010417521000244. ISSN0010-4175.
"W. 53d St. Building Is Leased as Home Of Modern Museum: 5-Story Structure To Be Occupied by May 1; Move Is Part of Bliss Plan". New York Herald Tribune. January 21, 1932. p. 17. ISSN1941-0646. ProQuest1114848138.
"173-Year-Old Concern Rents Fifth Av. Space: William Coulson & Sons Will Locate in Heckscher Building on Fifth Ave". New York Herald Tribune. November 25, 1932. p. 28. ISSN1941-0646. ProQuest1114732911.
"Antique Dealer Adds to Space On 5th Avenue: Symons Organization Takes Large Additional Unit in Heckscher Building". New York Herald Tribune. January 9, 1934. p. 34. ISSN1941-0646. ProQuest1222204369.
"Real Estate: Jewel Dealer Leases Space In 48th Street Universal Pictures Rents Penthouse in the Annex of 730 Fifth Avenue". New York Herald Tribune. April 22, 1935. p. 29. ISSN1941-0646. ProQuest1242903472.
"New Bridge Club Rents in Midtown: Shepard Barclay Heads Group to Occupy Floors in the Heckscher Building". The New York Times. March 28, 1934. p. 42. ISSN0362-4331. ProQuest101045255.
"New Luncheon Club Rents on 5th Avenue". New York Herald Tribune. February 26, 1939. p. C1. ISSN1941-0646. ProQuest1243147141.
"Heckscher Suit Asks 10 Million Of Rockefeller: Cites Unfair Competition; Calls Midlown Center a Frankenstein Monster". New York Herald Tribune. January 11, 1934. p. 1. ISSN1941-0646. ProQuest1242834815.
"Heckscher Suit Asks 10 Million Of Rockefeller: Cites Unfair Competition; Calls Midlown Center a Frankenstein Monster". New York Herald Tribune. January 11, 1934. p. 1. ISSN1941-0646. ProQuest1242834815; Warren, Carl (January 13, 1934). "Another Lease Spurs Attack on Radio City". Daily News. p. 5. Archived from the original on June 17, 2024. Retrieved June 17, 2024.
"Foreclosure Suit Is Filed Over Heckscher Building". New York Herald Tribune. December 5, 1934. p. 35. ISSN1941-0646. ProQuest1221537228.
"Parfums Charbert Rents Heckscher Building Space". New York Herald Tribune. April 18, 1944. p. 30. ISSN1941-0646. ProQuest1282891126; "4 Floors Leased by Jewish Board". The New York Times. April 14, 1944. p. 32. ISSN0362-4331. ProQuest106789649.
"Film Concern Leases: New Sales Organization Takes Floor in 730 Fifth Avenue". The New York Times. May 18, 1949. p. 48. ISSN0362-4331. ProQuest105992672.
"Joseph Durst Mystery Man in Heckscher Deal: Fanner of Charles Noyes in Purchase of 25-Story Building, 5th Av., 57th St". New York Herald Tribune. February 8, 1946. p. 23. ISSN1941-0646. ProQuest1284547354.
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