Samuel Hartlib doesn’t exactly spring to mind when thinking about influential figures of the 17th century. But he served as a sort of conduit for information and connections among them as he sought to promote his ideas regarding theology and education.

Research:

• Britannica Editors. "Samuel Hartlib". Encyclopedia Britannica, 8 Mar. 2026, https://www.britannica.com/biography/Samuel-Hartlib
• Britannica Editors. "Thirty Years’ War". Encyclopedia Britannica, 30 Mar. 2026, https://www.britannica.com/event/Thirty-Years-War
• Britannica Editors. "John Dury". Encyclopedia Britannica, 1 Jan. 2026, https://www.britannica.com/biography/John-Dury
• Hartlib, Samuel, OR John Dury. “A Further Discoverie Of The Office Of Public Address For Accommodations.” 1648. The Hartlib Papers. University of Sheffield. https://www.dhi.ac.uk/hartlib/view?docset=main&docname=14A_02_03
• Hartlib, Samuel. “Ephemerides 1635.” The Hartlib Papers. University of Sheffield. https://www.dhi.ac.uk/hartlib/view?docset=main&docname=29_03_01&term0=transtext_ephemerides#highlight
• Hartlib, Samuel. “Ephemerides 1650.” The Hartlib Papers. University of Sheffield. https://www.dhi.ac.uk/hartlib/view?docset=main&docname=28_01_49&term0=transtext_ephemerides#highlight
• Hartlib, Samuel. “Ephemerides 1651.” The Hartlib Papers. University of Sheffield. https://www.dhi.ac.uk/hartlib/view?docset=main&docname=28_02_01&term0=transtext_ephemerides#highlight
• Hartlib, Samuel. “Ephemerides 1659.” The Hartlib Papers. University of Sheffield. https://www.dhi.ac.uk/hartlib/view?docset=main&docname=29_08_01&term0=transtext_ephemerides#highlight
• McDowell, Nicholas. “The Oxford Handbook of Milton (Oxford Handbooks).” OUP Oxford. 2009. Kindle Edition.
• Masson, Victoria. “The Origins & Causes of the English Civil War.” Historic U.K. https://www.historic-uk.com/HistoryUK/HistoryofEngland/Origins-of-the-English-Civil-War/
• Milton, John. “Tractate on Education. A FACSIMILE REPRINT FROM THE EDITION OF 1673. EDITED WITH AN INTRODUCTION AND NOTES BY OSCAR BROWNING, M.Α.” Cambridge University Press. 1890. https://play.google.com/store/books/details?id=KzsVAAAAYAAJ&rdid=book-KzsVAAAAYAAJ&rdot=1
• “Pact Signed By Dury, Comenius And Hartlib, And Later By William Hamilton.” The Hartlib Papers. March 3, 1642. The University of Sheffield. https://www.dhi.ac.uk/hartlib/view?docset=additional&docname=7E_109T&term0=transtext_pact#highlight
• Trevor-Roper, Hugh. “The Crisis of the Seventeenth Century.” Liberty Fund Indianapolis. 1967. https://web.archive.org/web/20061213185209/http://olldownload.libertyfund.org/Texts/LFBooks/TrevorRoper0256/Crisis17thC/0098_Bk.pdf
• Turnbull, G. H. “Samuel Hartlib’s Influence on the Early History of the Royal Society.” Notes and Records of the Royal Society of London, vol. 10, no. 2, 1953, pp. 101–30. JSTOR, http://www.jstor.org/stable/530806
• Turnbull, G.H. “SAMUEL HAKTLIB A SKETCH OF HIS LIFE AND HIS RELATIONS TO J. A. COMENIUS.” Oxford University Press. 1920. https://ia801209.us.archive.org/21/items/cu31924027998859/cu31924027998859.pdf
• Webster, Charles. “A Portrait of Samuel Hartlib: In Search of Universal Betterment.” Open Book Publishers. 2025. Accessible online: https://www.openbookpublishers.com/books/10.11647/obp.0486

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Carlos Juan Finlay was a Cuban doctor who did a lot of work to understand the spread of Yellow Fever. But Walter Reed got most of the credit.

Research:

• American Experience. “Carlos Finlay (1833-1915).” From The Great Fever. PBS. https://www.pbs.org/wgbh/americanexperience/features/fever-carlos-finlay/
• Berenbrok, Dorothy E., "Latin Heritage Month. Carlos Juan Finlay: Outrageous, Courageous and Correct" (2015). Posters: Jefferson History. 3. https://jdc.jefferson.edu/jeffhistoryposters/3
• "Carlos Juan Finlay." Encyclopedia of World Biography Online, Gale, 1998. Gale In Context: Opposing Viewpoints, link.gale.com/apps/doc/K1631002194/GPS?u=mlin_n_melpub&sid=bookmark-GPS&xid=bfeecc25. Accessed 29 Apr. 2026.
• Chaves-Carballo, Enrique. “Carlos J. Finlay: The mosquito man.” Hektoen International. 11/2/2020. https://hekint.org/2020/11/02/carlos-j-finlay-the-mosquito-man/
• Corbitt, Duvon C. “Carlos J. Finlay, Cuban Physician.” The Hispanic American Historical Review, Vol. 45, No. 3 (Aug., 1965). Via JSTOR. https://www.jstor.org/stable/2511751
• Del Regato, Juan A. “Carlos Juan Finlay (1833-1915).” Journal of Public Health Policy , 2001, Vol. 22, No. 1 (2001). Via JSTOR. https://www.jstor.org/stable/3343556
• Faerstein, Eduardoa; Winkelstein, Warren Jrb. Carlos Juan Finlay: Rejected, Respected, and Right. Epidemiology 21(1):p 158, January 2010. | DOI: 10.1097/EDE.0b013e3181c308e0
• Ferreira Moreno, Víctor Guillermo. “Evocation to the Dr. Carlos J. Finlay Barres on the centennial of his death.” Colombia medica (Cali, Colombia) vol. 47,1 63-6. 30 Mar. 2016
• Finlay, Carlos J. “The Mosquito Hypothetically Considered as the Agent of Transmission of Yellow Fever.” Read before the Royal Academy of Medical, Physical and Natural Sciences Session of August 14th, 1881. https://archive.org/details/b33448541/page/590/mode/1up
• Finlay, Carlos Juan. “Trabajos selectos del Dr. Carlos J. Finlay. Selected papers of Dr. Carlos J. Finlay.” Habana. 1912. https://archive.org/details/trabajosselectos00finl
• Finlay, Charles. “Inoculations for Yellow Fever by Means of Contaminated Mosquitoes.” Published in The American Journal of the Medical Sciences, n.s. 102: 264-268, 1891. https://archive.org/details/b33445242/page/n4/mode/1up
• Finlay, Charles. “Yellow Fever: Its ‘Transmission by Means of the Culex Mosquito.” Published in The American Journal of the Medical Sciences, n.s. 92: 395-409, 1886. https://archive.org/details/b33435698/page/613/mode/1up
• Palmer, Steven. “A Cuban Scientist Between Empires: Peripheral Vision on Race and Tropical Medicine.” Canadian Journal of Latin American and Caribbean Studies / Revue canadienne desétudes latino-américaines et caraïbes, Vol. 35, No. 69, Special Issue: Landscapes of LatinAmerican Health, 1870-1970. Via JSTOR. https://www.jstor.org/stable/41800498
• Spears, Ellen Griffith and Rosa López-Oceguera. “Carlos Juan Finlay, William Gorgas, and Walter Reed and the U.S. Army Yellow Fever Controversy: Competing Historical Memories.” Alabama Review The University of Alabama Press. Volume 74, Number 1, January 2021. https://doi.org/10.1353/ala.2021.0011
• Stepan, Nancy. “The Interplay between Socio-Economic Factors and Medical Science: Yellow Fever Research, Cuba and the United States.” Social Studies of Science , Nov., 1978, Vol. 8, No. 4 (Nov., 1978). Via JSTOR. http://www.jstor.com/stable/284817
• Thomas Jefferson University. “10 Notable Jefferson Alumni of the Past.” https://library.jefferson.edu/archives/exhibits/notable_alumni/juan_carlos_finlay.cfm
• Tone, John Lawrence. (2002) “How the mosquito (man) liberated Cuba.” History and Technology, 18:4, 277-308, DOI: 10.1080/07341512.2002.11417735
• “Carlos J. Finlay.” 5/16/2023. https://www.unesco.org/en/prizes/carlos-j-finlay/about
• Woodall, Jack. "Yellow Fever." Infectious Diseases: In Context, edited by Brenda Wilmoth Lerner and K. Lee Lerner, vol. 2, Gale, 2008, pp. 925-931. In Context Series. Gale In Context: Opposing Viewpoints, link.gale.com/apps/doc/CX3045200265/GPS?u=mlin_n_melpub&sid=bookmark-GPS&xid=bf646a26. Accessed 29 Apr. 2026.

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This 2022 episode covers Deborah Sampson, who could count William Bradford and Myles Standish in her family tree. That tree didn’t include Robert Shurtliff; that was the alias Deborah used to enlist in the Continental Army.

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