Ladd Observatory (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ladd Observatory" in English language version.

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8books.google.com

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4brown.edu

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archive.org

Bartky, Ian R. (2000). Selling the true time. Stanford University Press. p. 199. ISBN 9780804738743. Retrieved March 29, 2019. Other research-oriented observatories continued to sell time, with varying degrees of financial success.

astronomy.com

cs.astronomy.com

Huestis, David A. (July 22, 2014). "Seagrave Memorial Observatory centennial (1914-2014)". Astronomy Magazine. Kalmbach Publishing Co. Retrieved January 7, 2016.^{[dead link‍]}

books.google.com

Upton, Winslow (December 1891). "The Ladd Observatory". Sidereal Messenger. pp. 502–504. Retrieved February 20, 2025.
Upton, Winslow (October 21, 1908). "Report of the Director of the Observatory". Annual Report of the President to the Corporation of Brown University. p. 63. Retrieved February 20, 2025.
Upton, Winslow (October 1913). "Report of the Director of the Ladd Observatory". Annual Report of the President to the Corporation of Brown University. Providence. Retrieved February 20, 2025.{{cite book}}: CS1 maint: location missing publisher (link)
Upton, Winslow (June 21, 1894). "Report of the Professor of Astronomy and Curator of Ladd Observatory". Annual Report of the President to the Corporation of Brown University. Retrieved February 20, 2025.
"Income Account". Treasurer's Report. Brown University. 1906. Retrieved February 20, 2025.
"Income Account". Treasurer's Report. Brown University. 1916. Retrieved February 20, 2025.
Upton, Winslow (October 3, 1906). "Report of the Director of the Observatory". Annual Report of the President to the Corporation of Brown University. Retrieved February 20, 2025.
Richardson, R.G.D. (October 1914). "Astronomy". Annual Report of the President to the Corporation of Brown University. Retrieved February 20, 2025.

brown.edu

Fellman, Bruce (March 1992). "Enchanted Evenings: Ladd Observatory Turns 100" (PDF). Brown Alumni Monthly. Retrieved February 20, 2025.
Mitchell, Martha (1993). "Ladd Observatory". Encyclopedia Brunoniana. Providence, RI: Brown University Library. Archived from the original on May 6, 2021. Retrieved February 20, 2025.

blogs.brown.edu

Umbricht, Michael L. (July 10, 2017). "Tin-top Hill". Ladd Observatory Blog. Brown University Physics. Archived from the original on December 4, 2022. Retrieved February 20, 2025.

repository.library.brown.edu

"Steward Delaney's New Clock". Brown Daily Herald. Vol. 5, no. 11. September 30, 1895. Retrieved February 20, 2025.

harvard.edu

ui.adsabs.harvard.edu

Smiley, Charles H. (1935). "Time signals on short-wave radio". Popular Astronomy. 43: 152–157. Bibcode:1935PA.....43..152S.

historicnewengland.org

Donnelly, Marian Card (Winter 1960). "Astronomical Observatories in New England". Old-Time New England. 50 (179). Society for the Preservation of New England Antiquities: 72–80. Retrieved February 20, 2025.

hplovecraft.com

Loucks, Donovan K. (March 29, 2006). "H.P. Lovecraft's Interest in Astronomy". The H.P. Lovecraft Archive. Retrieved February 20, 2025.

noaa.gov

ngs.noaa.gov

"OBSERVER". NGS Data Sheet. National Geodetic Survey. 1999. Retrieved February 20, 2025.

nps.gov

focus.nps.gov

"National Register Asset Details". The Focus Digital Asset Management System. National Park Service. January 1992. Retrieved February 6, 2016.^{[dead link‍]}

ri.gov

preservation.ri.gov

Robinson, Arnold N.; Swanson, Carla (June 6, 2000). National Register of Historic Places Registration Form: Ladd Observatory (PDF) (Report). National Park Service. Retrieved February 20, 2025.

umn.edu

manifold.umn.edu

"Silencing America's Wireless". The Electrical Experimenter. Vol. 5, no. 2. June 1917.

web.archive.org

Umbricht, Michael L. (July 10, 2017). "Tin-top Hill". Ladd Observatory Blog. Brown University Physics. Archived from the original on December 4, 2022. Retrieved February 20, 2025.
Mitchell, Martha (1993). "Ladd Observatory". Encyclopedia Brunoniana. Providence, RI: Brown University Library. Archived from the original on May 6, 2021. Retrieved February 20, 2025.