Stuff You Missed in History Class

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Electrocardiograms
The first electrocardiograph was invented in 1895. That device looked a lot different from today’s machines, and there are some other contenders for the title of “first.” Research: AlGhatrif, Majd, and Joseph Lindsay. “A brief review: history to understand fundamentals of electrocardiography.” Journal of community hospital internal medicine perspectives vol. 2,1 10.3402/jchimp.v2i1.14383. 30 Apr. 2012, doi:10.3402/jchimp.v2i1.14383 Baldassarre, Antonio et al. “The Role of Electrocardiography in Occupational Medicine, from Einthoven's Invention to the Digital Era of Wearable Devices.” International journal of environmental research and public health vol. 17,14 4975. 10 Jul. 2020, doi:10.3390/ijerph17144975 Browne, Sir Thomas. “Chap. IV: Of Bodies Electrical.” From Pseudodoxia Epidemica. 1672. https://penelope.uchicago.edu/pseudodoxia/pseudo24.html Case Western Reserve. “Cambridge Electrocardiograph, 1920.” https://artsci.case.edu/dittrick/online-exhibits/explore-the-artifacts/cambridge-electrocardiograph-1920/ Fisch, Charles. “Centennial of the string galvanometer and the electrocardiogram.” Journal of the American College of Cardiology. Volume 36, Issue 6, 15 November 2000. https://www.sciencedirect.com/science/article/pii/S0735109700009761 Friedman, Paul A. “The Electrocardiogram at 100 Years: History and Future.” Circulation. Volume 149, Number 6. https://doi.org/10.1161/CIRCULATIONAHA.123.065489. Fye, W. Bruce. “A History of the Origin, Evolution and Impact of Electrocardiography.” The American Journal of Cardiology. Vol. 73, No. 13. 5/15/1994. Goodrich, Joanna. “Forget Electrodes, the First EKG Machine Used Buckets of Saline Solution and Telephone Wire.” IEEE Spectrum. 1/5/2021. https://spectrum.ieee.org/forget-electrodes-the-first-ekg-machine-used-buckets-of-saline-solution-and-telephone-wire Howell, Joel D. “Early Perceptions of the Electrocardiogram: From Arrythmia to Infarction.” Bulletin of the History of Medicine, SPRING 1984, Vol. 58, No. 1. Via JSTOR. https://www.jstor.org/stable/44441681 Jenkens, Dean and Dr Stephen Gerred. “A (not so) brief history of electrocardiography.” ECG Library. 2009. https://ecglibrary.com/ecghist.html Macfarlane PW, Kennedy J. Automated ECG Interpretation—A Brief History from High Expectations to Deepest Networks. Hearts. 2021; 2(4):433-448. https://doi.org/10.3390/hearts2040034 Rautaharju, Pentti M. “Eyewitness to history: Landmarks in the development of computerized electrocardiography.” Journal of Electrocardiology 49 (2016) 1 – 6. Rivera-Ruiz, Moises et al. “Einthoven's string galvanometer: the first electrocardiograph.” Texas Heart Institute journal vol. 35,2 (2008): 174-8. Salam, Amar M. “The Invention of Electrocardiography Machine.” HeartViews. 2019 Nov 14;20(4):181–183. doi: 10.4103/HEARTVIEWS.HEARTVIEWS_102_19. Vincent, Rony. “From a laboratory to the wearables: a review on history and evolution of electrocardiogram.” Iberoamerican Journal of Medicine, vol. 4, núm. 4, pp. 248-255, 2022. https://www.redalyc.org/journal/6920/692072548011/html/ See omnystudio.com/listener for privacy information.
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37:17
SYMHC Classics: Wat Tyler’s Rebellion
This 2020 episode covers one of the transitional events between the Black Death and the Renaissance. Wat Tyler’s Rebellion was also known as the Uprising of 1381 or the Great Rising.See omnystudio.com/listener for privacy information.
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Behind the Scenes Minis: Pope Riot
Holly and Tracy talk about Tracy growing up in a mostly Protestant community with little exposure to Catholicism. They also talk about the Gorsuch family's ties to John Wilkes Booth. See omnystudio.com/listener for privacy information.
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Christiana Incident of 1851
The Christiana Incident offers a snapshot of the U.S. when the country was sorting into states where slavery was upheld and states that had abolished it, and what racist tension looked like at border states in the mid-1850s. Research: “The Christiana Affair Again.” New York Times. Sept. 20, 1851. https://timesmachine.nytimes.com/timesmachine/1851/09/20/87821677.pdf?pdf_redirect=true&ip=0 “Christiana Resistance 1851.” Christiana Historical Society. https://www.christianahistoricalsociety.com/christiana-resistance “The Christiana Trials.” New York Times. Nov. 4, 1851. https://timesmachine.nytimes.com/timesmachine/1851/11/04/87823549.pdf?pdf_redirect=true&ip=0 The Editors of Encyclopaedia Britannica. "Fugitive Slave Acts". Encyclopedia Britannica, 28 Feb. 2025, https://www.britannica.com/event/Fugitive-Slave-Acts “Fatal Fugitive Slave Riot.” Boston Evening Transcript. Sept. 12, 1851. https://www.newspapers.com/image/734734274/ Forbes, David R. “A True Story of the Christiana Riot.” The Sun Printing House. Quarryville, PA. 1898. https://babel.hathitrust.org/cgi/pt?id=hvd.32044018986661&view=1up&seq=7 “Fugitive Slave Act 1850.” Yale Law School. Lillian Goldman Law Library. https://avalon.law.yale.edu/19th_century/fugitive.asp “Fugitive Slave Riot in Lancaster Co., Pa.” New York Times. Sept. 18, 1851. https://timesmachine.nytimes.com/timesmachine/1851/09/18/109920970.pdf?pdf_redirect=true&ip=0 “Christiana Riot Trial.” Encyclopedia of Greater Philadelphia. 2015. https://philadelphiaencyclopedia.org/essays/christiana-riot-trial/#national-history-day Parker, William. “A Freedman’s Story. The Atlantic. 1866. https://www.christianahistoricalsociety.com/_files/ugd/f64fcb_e6cde1713eb34263af1f191b3f349e21.pdf “Who was William Parker?” Christiana Historical Society. https://www.christianahistoricalsociety.com/william-parker See omnystudio.com/listener for privacy information.
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35:53
Pope Leo XIII
Pope Leo XIII sought to find a way forward for the Catholic church at a time when the world was rapidly changing and the church was often at odds with those changes. Research: Aubert, Roger-François-Marie. "Leo XIII". Encyclopedia Britannica, 18 May. 2025, https://www.britannica.com/biography/Leo-XIII “ELECTION OF POPE LEO XIII.” New York Times. Feb. 21, 1878. https://timesmachine.nytimes.com/timesmachine/1878/02/21/issue.html Jedin, Hubert and John Patrick Dolan. “History of the Church: The Church in the Industrial age.” Burns & Oates. 1981. https://books.google.com/books?id=h5LYAAAAMAAJ&source=gbs_navlinks_s Masci, David. “A look at popes and their encyclicals.” Pew Research Center. June 9, 2015. https://www.pewresearch.org/short-reads/2015/06/09/a-look-at-popes-and-their-encyclicals/ Miller, James Martin. “The life of Pope Leo XIII : containing a full and authentic account of the illustrious pontiff's life and work.” G.H. Harr. Omaha, Nebraska. 1908. Accessed online: https://archive.org/details/lifeofleo1300milluoft/page/n5/mode/2up O’Reilly, Bernard. “Life of Leo XIII, from an authentic memoir furnished by his order.” Sampson Low, Marston & Co. London. 1903. https://archive.org/details/lifeofleoxiiifro0000orei/page/n9/mode/2up Pope Leo XIII. “AETERNI PATRIS.” 1879. https://www.vatican.va/content/leo-xiii/en/encyclicals/documents/hf_l-xiii_enc_04081879_aeterni-patris.html Pope Leo XIII. “INSCRUTABILI DEI CONSILIO.” 1878. https://www.vatican.va/content/leo-xiii/en/encyclicals/documents/hf_l-xiii_enc_21041878_inscrutabili-dei-consilio.html Pope Leo XIII. “RERUM NOVARUM.” https://www.vatican.va/content/leo-xiii/en/encyclicals/documents/hf_l-xiii_enc_15051891_rerum-novarum.html Pope Leo XIII. “Testem Benevolentiae Nostrae.” 1899. https://www.papalencyclicals.net/leo13/l13teste.htm “Religious.” Chicago Tribune. February 24, 1878. https://www.newspapers.com/image/349728621/?match=1&terms=Pope%20Leo%20XIII “Vatican country profile.” BBC. Nov. 17, 2023. https://www.bbc.com/news/world-europe-17994868 See omnystudio.com/listener for privacy information.
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