monticello.org

vP49D TIL that as early as 1802, Thomas Jefferson designed a cypher wheel to encrypt messages. It's unknown if he ever actually built or used one, but a similar tool was invented for the U.S. Army to use from 1920 until the start of WWII. Jefferson's designs were discovered shortly after.
OG5W4 TIL that when Thomas Jefferson was in the White House he kept a flock of sheep on the White House lawn and one of them killed a small child.
69QMl TIL Thomas Jefferson regularly attended many different churches and declared "I am of a sect by myself" unlike many of the other devoted founding fathers.