"Plans for Fifth Avenue Residence". The Real Estate Record: Real estate record and builders' guide. Vol. 79, no. 2030. February 9, 1907. p. 310. Archived from the original on September 14, 2024. Retrieved September 13, 2024 – via columbia.edu.
"Much Activity on Upper 5th Avenue". The Real Estate Record: Real estate record and builders' guide. Vol. 79, no. 2025. January 12, 1907. p. 57. Archived from the original on September 12, 2024. Retrieved September 13, 2024 – via columbia.edu.
"Projected Buildings". The Real Estate Record: Real estate record and builders' guide. Vol. 79, no. 2049. June 22, 1907. p. 1233. Archived from the original on September 14, 2024. Retrieved September 13, 2024 – via columbia.edu.
"William R. H. Martin's New Building". The Real Estate Record: Real estate record and builders' guide. Vol. 81, no. 2077. January 4, 1908. p. 42. Archived from the original on September 14, 2024. Retrieved September 13, 2024 – via columbia.edu.
Goldberger, Paul (November 29, 1979). "Design Notebook". The New York Times. Archived from the original on July 30, 2021. Retrieved September 12, 2024.
proquest.com
"A Mile and a Half of Magnificent Residences from the Sherman Statue to the Carnegie Mansion". The New York Times. September 6, 1908. p. SM4. ISSN0362-4331. ProQuest96790356.
Town & Country 1912, p. 75. "A Handsome Home on Upper Fifth Avenue: at Number One East Seventy-fifth Street". Town & Country. Vol. 67, no. 31. October 12, 1912. pp. 35–37. ProQuest2099378967.
"Decorating: The Fine Simplicity of the Exterior of the New York Residence of Mr. Edward S. Harkness Intimates its Spacious, Dignified Interior". Vogue. Vol. 45, no. 5. March 1, 1915. p. 45. ProQuest911855653.
Town & Country 1912, pp. 76–77. "A Handsome Home on Upper Fifth Avenue: at Number One East Seventy-fifth Street". Town & Country. Vol. 67, no. 31. October 12, 1912. pp. 35–37. ProQuest2099378967.
Town & Country 1912, p. 76. "A Handsome Home on Upper Fifth Avenue: at Number One East Seventy-fifth Street". Town & Country. Vol. 67, no. 31. October 12, 1912. pp. 35–37. ProQuest2099378967.
Town & Country 1912, p. 77. "A Handsome Home on Upper Fifth Avenue: at Number One East Seventy-fifth Street". Town & Country. Vol. 67, no. 31. October 12, 1912. pp. 35–37. ProQuest2099378967.
"The Equipment of a Modern Residence". The American Architect. Vol. 95, no. 1742. May 12, 1909. p. 160. ProQuest124674610.
"E.S. Harkness Dies; Donor of $100,000,000: Philanthropist Passes at 66 in His Home Here After 2 Weeks' Illness His Gifts Benefited Science, Education Member of Oil Family Never Gave Interview or Made Public Speech". New York Herald Tribune. January 30, 1940. p. 1. ISSN1941-0646. ProQuest1242894714.
"A Benefactor Who Escapes Publicity: in Spite of His Enormous Gifts E. S. Harkness Remains, by Choice, Almost Unknown". Daily Boston Globe. June 14, 1931. p. A48. ProQuest757894469.
"Big Tax Values Aid Fight for Higher Salaries: Estimate Board Enabled to Increase Pay of Police, Firemen and Others, Cantor Declares". New-York Tribune. October 3, 1919. p. 11. ISSN1941-0646. ProQuest576187876.
"Broken Main Floods Homes In 5th Avenue: 36-lnch Conduit Bursts; Street Pools 6 Inches Deep Freeze; 10 Feet of Water in Cellars Firemen Pump Out Building Basements Harkness, Schiff, Gould and Other Mansions Are Damaged Slightly". The New York Herald, New York Tribune. December 16, 1924. p. 1. ISSN1941-0646. ProQuest1113196274.
Hazell, Naedine Joy (September 13, 1998). "Seaside mansion shipshape, see-worthy Palatial summer home in Connecticut draws visitors as state park". Milwaukee Journal Sentinel. p. 9. ProQuest260795864.
"E. S. Harkness Funeral Held Privately in Home". New York Herald Tribune. February 1, 1940. p. 16. ISSN1941-0646. ProQuest1242965844.
"E.S. Harkness Fortune To Go In Public Gifts: Will Gives Estate to Wife in Life Trust, To Be Divided on Her Death $1,300,000 Is Left To His Employees Commonwealth Fund to Get Half, Fourth to Go to Presbyterian Hospital". New York Herald Tribune. February 7, 1940. p. 1. ISSN1941-0646. ProQuest1242986997.
"Mrs. Harkness Dies; Widow of Financier, 75: Quietly Gave Millions of Her Own, in Addition to Husband's Philanthropy". New York Herald Tribune. June 7, 1950. p. 18. ISSN1941-0646. ProQuest1335423589.
"Mrs. Harkness Left Million to 4 Organizations: Presbyterian and Babies Hospitals, Commonwealth Fund, Tuskegee Named". New York Herald Tribune. June 21, 1950. p. 20. ISSN1941-0646. ProQuest1327247415.
Town & Country 1912, p. 75. "A Handsome Home on Upper Fifth Avenue: at Number One East Seventy-fifth Street". Town & Country. Vol. 67, no. 31. October 12, 1912. pp. 35–37. ProQuest2099378967.
Cox, Kenyon (July–December 1909). "A Novelty in Design for Leaded Glass"(PDF). Architectural Record. Vol. 26. pp. 453–454. Archived(PDF) from the original on August 17, 2022. Retrieved September 13, 2024.
"Plans for Fifth Avenue Residence". The Real Estate Record: Real estate record and builders' guide. Vol. 79, no. 2030. February 9, 1907. p. 310. Archived from the original on September 14, 2024. Retrieved September 13, 2024 – via columbia.edu.
"Big West Side Sale". New-York Tribune. June 22, 1907. p. 8. Archived from the original on September 14, 2024. Retrieved September 12, 2024.
"The Week in Society". Brooklyn Life. May 16, 1908. p. 19. Archived from the original on September 14, 2024. Retrieved September 12, 2024.
Cox, Kenyon (July–December 1909). "A Novelty in Design for Leaded Glass"(PDF). Architectural Record. Vol. 26. pp. 453–454. Archived(PDF) from the original on August 17, 2022. Retrieved September 13, 2024.
"Much Activity on Upper 5th Avenue". The Real Estate Record: Real estate record and builders' guide. Vol. 79, no. 2025. January 12, 1907. p. 57. Archived from the original on September 12, 2024. Retrieved September 13, 2024 – via columbia.edu.
"In the Real Estate Field". The New York Times. June 22, 1907. p. 13. Archived from the original on September 14, 2024. Retrieved September 12, 2024.
"Projected Buildings". The Real Estate Record: Real estate record and builders' guide. Vol. 79, no. 2049. June 22, 1907. p. 1233. Archived from the original on September 14, 2024. Retrieved September 13, 2024 – via columbia.edu.
"William R. H. Martin's New Building". The Real Estate Record: Real estate record and builders' guide. Vol. 81, no. 2077. January 4, 1908. p. 42. Archived from the original on September 14, 2024. Retrieved September 13, 2024 – via columbia.edu.
Goldberger, Paul (November 29, 1979). "Design Notebook". The New York Times. Archived from the original on July 30, 2021. Retrieved September 12, 2024.
"A Mile and a Half of Magnificent Residences from the Sherman Statue to the Carnegie Mansion". The New York Times. September 6, 1908. p. SM4. ISSN0362-4331. ProQuest96790356.
"E.S. Harkness Dies; Donor of $100,000,000: Philanthropist Passes at 66 in His Home Here After 2 Weeks' Illness His Gifts Benefited Science, Education Member of Oil Family Never Gave Interview or Made Public Speech". New York Herald Tribune. January 30, 1940. p. 1. ISSN1941-0646. ProQuest1242894714.
"Big Tax Values Aid Fight for Higher Salaries: Estimate Board Enabled to Increase Pay of Police, Firemen and Others, Cantor Declares". New-York Tribune. October 3, 1919. p. 11. ISSN1941-0646. ProQuest576187876.
"Broken Main Floods Homes In 5th Avenue: 36-lnch Conduit Bursts; Street Pools 6 Inches Deep Freeze; 10 Feet of Water in Cellars Firemen Pump Out Building Basements Harkness, Schiff, Gould and Other Mansions Are Damaged Slightly". The New York Herald, New York Tribune. December 16, 1924. p. 1. ISSN1941-0646. ProQuest1113196274.
"E. S. Harkness Funeral Held Privately in Home". New York Herald Tribune. February 1, 1940. p. 16. ISSN1941-0646. ProQuest1242965844.
"E.S. Harkness Fortune To Go In Public Gifts: Will Gives Estate to Wife in Life Trust, To Be Divided on Her Death $1,300,000 Is Left To His Employees Commonwealth Fund to Get Half, Fourth to Go to Presbyterian Hospital". New York Herald Tribune. February 7, 1940. p. 1. ISSN1941-0646. ProQuest1242986997.
"Mrs. Harkness Dies; Widow of Financier, 75: Quietly Gave Millions of Her Own, in Addition to Husband's Philanthropy". New York Herald Tribune. June 7, 1950. p. 18. ISSN1941-0646. ProQuest1335423589.
"Mrs. Harkness Left Million to 4 Organizations: Presbyterian and Babies Hospitals, Commonwealth Fund, Tuskegee Named". New York Herald Tribune. June 21, 1950. p. 20. ISSN1941-0646. ProQuest1327247415.