Culper Ring (English Wikipedia)

“[Diary entry: 31 May 1781],” Founders Online, National Archives, https://founders.archives.gov/documents/Washington/01-03-02-0007-0001-0027. [Original source: The Diaries of George Washington, vol. 3, 1 January 1771 – 5 November 1781, ed. Donald Jackson. Charlottesville: University Press of Virginia, 1978, pp. 374–375.]

books.google.com

Nelson, David Paul. Culper Ring in Hastedt, Glenn, P., ed. Spies, Wiretaps, and Secret Operations: A-J. Santa Barbara, CA: ABC-CLIO, 2011. ISBN 978-1-85109-807-1. p. 217.
Naylor, Natalie A. Women in Long Island's Past: A History of Eminent Ladies and Everyday Lives. Charleston, SC: The History Press, 2012. ISBN 978-1-60949-499-5. Retrieved May 1, 2014. p. 38.
Welch, Richard F. General Washington's Commando: Benjamin Tallmadge in the Revolutionary War. Jefferson, NC: McFarland & Company, Inc., 2014. ISBN 978-0-7864-7963-4. p. 37.
Nelson, David Paul. Robert Townsend in Hastedt, Glenn, P., ed. Spies, Wiretaps, and Secret Operations: A-J. Santa Barbara, CA: ABC-CLIO, 2011. ISBN 978-1-85109-807-1. p. 763.
Kahn, David. The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet. New York, Simon and Schuster, 1996. ISBN 978-1-4391-0355-5. p. 179.
Mahl, Tom E. Espionage's Most Wanted: The Top 10 Book of Malicious Moles, Blown Covers, and Intelligence Oddities. Potomac Books, Inc., 2003. ISBN 978-1-61234-038-8. Retrieved May 1, 2014. p. 43.
Weigold, Marilyn E. (2004). The Long Island Sound: A History of Its People, Places, and Environment. New York: NYU Press. ISBN 978-0-8147-9400-5.
Knott, Stephen. Secret and Sanctioned: Covert Operations and the American Presidency. New York: Oxford University Press, 1996. ISBN 978-0-19-510098-3. Retrieved May 22, 2014. p. 40.
Misencik, Paul R. The Original American Spies: Seven Covert Agents of the Revolutionary War. Jefferson, NC: McFarland, 2013. ISBN 978-0-7864-7794-4. p. 116.

doi.org

Martin, Amy J. (Fall 2015). "America's Evolution of Women and Their Roles in the Intelligence Community". Journal of Strategic Security. 8 (3): 99–109. doi:10.5038/1944-0472.8.3S.1479. JSTOR 26465249.

ebscohost.com

search.ebscohost.com

Lengel, E. G. (2009). "Spymaster in Chief". Military History. 26 (2): 28. Retrieved 26 October 2022.

jstor.org

Martin, Amy J. (Fall 2015). "America's Evolution of Women and Their Roles in the Intelligence Community". Journal of Strategic Security. 8 (3): 99–109. doi:10.5038/1944-0472.8.3S.1479. JSTOR 26465249.

longislandadvance.net

Leuzzi, Linda "A letter of Significance” Long Island Advance Archived 2015-11-20 at the Wayback Machine, October 22, 2015

newsday.com

MacGowan, Carl "Letter surfaces connecting 2 Port Jefferson brothers to Revolutionary War Culper spy ring" Newsday, November 3, 2015

nysarchivestrust.org

Sternberg, Mark (Fall 2022). "Selah Strong: Records Reveal an Overlooked Hero of the Culper Spy Ring" (PDF). New York Archives. Albany, NY: New York Archives Trust. ISSN 1535-7813. Retrieved March 6, 2023.

oneonta.edu

external.oneonta.edu

Walker, Warren S. "The Prototype of Harvey Birch". oneonta.edu. Retrieved April 27, 2014.

raynhamhallmuseum.org

"Raynham Hall Museum". raynhamhallmuseum.org. Retrieved 2016-05-31.

tbrnewsmedia.com

TBR Staff "Historian’s pastime digs deep into local history", December 31, 2022

umich.edu

clements.umich.edu

William L. Clements Library "The Sir Henry Clinton Collection" Archived 2015-10-29 at the Wayback Machine retrieved October 27, 2015

web.archive.org

Leuzzi, Linda "A letter of Significance” Long Island Advance Archived 2015-11-20 at the Wayback Machine, October 22, 2015
William L. Clements Library "The Sir Henry Clinton Collection" Archived 2015-10-29 at the Wayback Machine retrieved October 27, 2015

worldcat.org

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Tallmadge 1858, p. 68. Tallmadge, Benjamin (1858). Memoir of Col. Benjamin Tallmadge. Thomas Holman. OCLC 15547874.
Sternberg, Mark (Fall 2022). "Selah Strong: Records Reveal an Overlooked Hero of the Culper Spy Ring" (PDF). New York Archives. Albany, NY: New York Archives Trust. ISSN 1535-7813. Retrieved March 6, 2023.
Misencik, Paul R. (2016). Sally Townsend, George Washington's teenage spy. Jefferson, North Carolina: McFarland & Company, Inc. ISBN 978-0-7864-9987-8. OCLC 910334343. Misencik provides an extensive account of Sally Townsend's role as a spy.