So, You’re Lost in Time: Determine When You Are
Code companion to simplify calculating angular distance between stars can be found on the History Survival Guide Github repo
Dunn, Tony. Proper Motion Simulator, orbitsimulator.com/gravitySimulatorCloud/properMotionHome.html.
Halley, Edmund. “Considerations on the Change of Latitudes of Some of the Principal Fixt Stars.” The Philosophical Transactions of the Royal Society of London, from Their Commencement in 1665 to the Year 1800, 1809, pp. 329–330.
“How to Calculate the Angular Distance Between Two Stars.” Astrometry and Phot Calculator, www.gyes.eu/calculator/calculator_page1.htm.
Illingworth, Valerie. The Anchor Dictionary of Astronomy. Anchor Books, 1979.
“List of the Constellations.” In-The-Sky.org, in-the-sky.org/data/constellations_list.php
So, You’re Riding the Rails: Hobo Signs and Symbols
A complete list of all symbols as PNG files can be found on the History Survival Guide Github repo
“Any Chalk Marks on Your Fence.” The Havre Herald, 15 Apr. 1908, p. 3, chroniclingamerica.loc.gov/lccn/sn84036162/1908-04-15/ed-1/seq-3/
Beard, Daniel Carter. The American Boys’ Book of Signs, Signals and Symbols. 1918.
“Boy Tramp.” The Stark County Democrat, 26 Feb. 1904, p. 3, chroniclingamerica.loc.gov/lccn/sn84028490/1904-02-26/ed-1/seq-3/.
“Code of Hobo-Land.” Western Kansas World, 23 Apr. 1904, p. 6, chroniclingamerica.loc.gov/lccn/sn82015485/1904-04-23/ed-1/seq-6/.
“Gate-Post Language.” Western Kansas World, 28 Jan. 1893, p. 2, chroniclingamerica.loc.gov/lccn/sn82015485/1893-01-28/ed-1/seq-2/.
“Glad Hand or Marble Heart.” The Globe-Republican, 10 May 1895, p. 2, chroniclingamerica.loc.gov/lccn/sn84029853/1895-05-10/ed-1/seq-2/.
Haskin, Frederic J. “Evening Star.” Answers to Question, 9 July 1931, p. 8, chroniclingamerica.loc.gov/lccn/sn83045462/1931-07-09/ed-1/seq-8/.
“Hobo Sign Language Is Changed and Secret Marks Become Public Property.” El Paso Herald, 10 Aug. 1914, p. 12, chroniclingamerica.loc.gov/lccn/sn88084272/1914-08-10/ed-1/seq-12/.
“Hobo Signs on Gate Posts.” The Guthrie Daily Leader, 25 Feb. 1902, p. 2, chroniclingamerica.loc.gov/lccn/sn86063952/1902-02-25/ed-1/seq-2/.
“Hobo Signs.” Payette Enterprise, 20 June 1912, p. 2, chroniclingamerica.loc.gov/lccn/sn89055199/1912-06-20/ed-1/seq-2/.
“Hoboes Have Secret Code: Lodge King Deciphers It.” The Seattle Star, 27 Nov. 1922, p. 2, chroniclingamerica.loc.gov/lccn/sn87093407/1922-11-27/ed-1/seq-2/.
“Home News.” The County Paper, 1 Apr. 1881, p. 1, chroniclingamerica.loc.gov/lccn/sn90061416/1881-04-01/ed-1/seq-1/.
“Inverted Pitchfork Is Sign Dreaded by Tramps.” The Washington Times, 29 July 1914, p. 9, chroniclingamerica.loc.gov/lccn/sn84026749/1914-07-29/ed-1/seq-9/.
“Plodding Pierre’s Guidebook.” New-York Tribune, 8 Sept. 1921, p. 3, chroniclingamerica.loc.gov/lccn/sn83030214/1921-09-18/ed-1/seq-53/.
“Remarkable Experience of a Business Man Disguised as a Tramp.” The Minneapolis Journal, 26 Nov. 1905, p. 49, chroniclingamerica.loc.gov/lccn/sn83045366/1905-11-26/ed-1/seq-49/.
“Roundabout.” El Paso Daily Herald, 27 Sept. 1897, p. 4, chroniclingamerica.loc.gov/lccn/sn86064199/1897-09-27/ed-1/seq-4/.
“Secret Code of Tramps.” The Inter-Mountain Farmer and Rachman, 2 Sept. 1902, p. 10, chroniclingamerica.loc.gov/lccn/2010218500/1902-09-02/ed-1/seq-10/.
“Signal Code of Trampdom.” The Kendrick Gazette, 4 June 1909, p. 3, chroniclingamerica.loc.gov/lccn/sn86091096/1909-06-04/ed-1/seq-3/.
“Signs of the Hobo.” The Tacoma Times, 8 Mar. 1911, p. 5, chroniclingamerica.loc.gov/lccn/sn88085187/1911-03-08/ed-1/seq-5/
“Signs of Tramp World.” Dakota Farmers’ Leader, 13 Mar. 1908, p. 6, chroniclingamerica.loc.gov/lccn/sn00065127/1908-03-13/ed-1/seq-6/.
“Signs of Tramps: How the Wanderers Mark Fences and Gate Posts.” Evening Star, 29 Sept. 1894, p. 16, chroniclingamerica.loc.gov/lccn/sn83045462/1894-09-29/ed-1/seq-16/.
“Signs Used by Tramps.” New Ulm Review, 2 Aug. 1893, p. 5, chroniclingamerica.loc.gov/lccn/sn89081128/1893-08-02/ed-1/seq-5/.
“‘The Following Signs Are Said to Be Tramp Signs.’” Juniata Sentinel and Republican, 1 Aug. 1873, chroniclingamerica.loc.gov/lccn/sn86053634/1877-08-01/ed-1/seq-3/.
“The Tramp Problem.” Evening Star, 21 May 1905, p. 19, chroniclingamerica.loc.gov/lccn/sn83045462/1905-05-21/ed-1/seq-19/.
“The Tramp Trust: A Million In It.” The Spokane Press, 13 Feb. 1910, p. 16, chroniclingamerica.loc.gov/lccn/sn88085947/1910-02-13/ed-1/seq-16/.
“The Tramp’s Cipher.” Morris Tribune, 26 Mar. 1884, p. 4, chroniclingamerica.loc.gov/lccn/sn91059394/1884-03-26/ed-1/seq-4/.
“The Tramp’s Signal Code.” The Great Falls Leader, 17 Jan. 1889, p. 2, chroniclingamerica.loc.gov/lccn/sn86075267/1889-01-17/ed-1/seq-2/.
“Tramp Sign Writing.” The Washington Herald, 24 Apr. 1910, p. 6, chroniclingamerica.loc.gov/lccn/sn83045433/1910-04-24/ed-1/seq-6/.
“Tramp Signs and Habits of Tramps.” Dodge City Times, 22 Nov. 1879, p. 5, chroniclingamerica.loc.gov/lccn/sn84029838/1879-11-22/ed-1/seq-5/.
“Tramp Signs.” Brenham Weekly Banner, 25 Apr. 1879, p. 3, chroniclingamerica.loc.gov/lccn/sn86089443/1879-04-25/ed-1/seq-3/.
“Tramps and Their Marks.” Morning Appeal, 13 Jan. 1882, p. 3, chroniclingamerica.loc.gov/lccn/sn86076999/1882-01-13/ed-1/seq-3/.
“Tramps and Their Signs.” The Aegis & Intelligencer, 12 Sept. 1879, p. 1, chroniclingamerica.loc.gov/lccn/sn83016107/1879-09-12/ed-1/seq-1/.
“Tramps’ Gatepost Signs.” Frostburg Mining Journal, 9 Aug. 1902, p. 4, chroniclingamerica.loc.gov/lccn/sn85025350/1902-08-09/ed-1/seq-4/.
“Tramps Have Signs.” The Coalville Times, 29 Aug. 1902, p. 3, chroniclingamerica.loc.gov/lccn/sn85058217/1902-08-29/ed-1/seq-3/.
“Tramps in Germany Have ‘Union’; Tip Off Their Brothers with Signs.” Pueblo Chieftain, 30 July 1921, p. 13, chroniclingamerica.loc.gov/lccn/sn90051672/1921-07-30/ed-1/seq-13/.
“Tramps’ Signs.” The Great Falls Leader, 12 Feb. 1889, p. 2, chroniclingamerica.loc.gov/lccn/sn86075267/1889-02-12/ed-1/seq-2/.
“What Tramps’ Signs Mean.” Richmond Times-Dispatch, 6 Dec. 1914, p. 54, chroniclingamerica.loc.gov/lccn/sn83045389/1914-12-06/ed-1/seq-54/.
Folklore Survival Guide: How to Kill (or Cure) a Wendigo
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So, Angles: Making a Protractor, as Simply as Possible
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So, Pi: Pi to 4782ths Place
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Rayman, Marc. “How Many Decimals of Pi Do We Really Need? – Edu News.” Jet Propulsion Laboratory, NASA, 17 Mar. 2016, www.jpl.nasa.gov/edu/news/2016/3/16/how-many-decimals-of-pi-do-we-really-need/.
So, You’re Lost in Space: How to Read the Pioneer Plaque
A complete PNG of the Pioneer Plaque can be found on the History Survival Guide Github repo
Berendzen, Richard. Life Beyond Earth and the Mind of Man: a Symposium Held at Boston University on November 20,1972. NASA, Scientific and Technical Information Office, 1973.
Dunbar, Brian. “Pioneer 10 Spacecraft Sends Last Signal.” NASA, NASA, 25 Feb. 2003, www.nasa.gov/centers/ames/news/releases/2003/03_25HQ.html.
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Howell, Elizabeth. “Pioneer 10: Greetings from Earth.” Space.com, Space.com, 18 Sept. 2012, www.space.com/17651-pioneer-10.html.
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Sagan, Carl, et al. “A Message from Earth.” Science, vol. 175, no. 4024, 1972, pp. 881–884., doi:10.1126/science.175.4024.881.
Siegel, Ethan. “Voyager’s ‘Cosmic Map’ Of Earth’s Location Is Hopelessly Wrong.” Forbes, Forbes Magazine, 17 Aug. 2017, www.forbes.com/sites/startswithabang/2017/08/17/voyagers-cosmic-map-of-earths-location-is-hopelessly-wrong/?sh=672a5cb769d5.
So, You Need a Magnet: How To Build an Electromagnet
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So, You Have Scurvy: Vitamin C Deficiency: Prevention and Treatment in a Hurry
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Carpenter, Kenneth J. The History of Scurvy and Vitamin C. Cambridge Univ. Pr., 2003.
Drouin, Guy, et al. “The Genetics of Vitamin C Loss in Vertebrates.” Current Genomics, vol. 12, no. 5, 2011, pp. 371–378., https://doi.org/10.2174/138920211796429736.
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So, Cistercian Numerals: Decoding an Antique Number System
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