Elizabeth A. Niles (1842-1920) served alongside her husband, Miles, in the Union Army during the American Civil War from 1861 to 1864. She served the entire time without being discovered.

From 1935 through the end of 1936, Hitler intensified control of the population, militarization, and persecution.

Carl Friedrich Gauss (1777–1855), a child prodigy, discovered astounding theories in mathematics, physics, astronomy, and engineering. After over 200 years, they continue to shape modern science and technology, affecting our day-to-day lives. 

Mary Donoho (1807–1880), along with her husband William and their nine-month-old daughter, traveled from Independence, Missouri, to Santa Fe, New Mexico, in 1833. She became the first American woman to complete the 900 mile trip in a covered wagon.