Posts by Keith Williams
- 18 Dec 1865: Thirteenth Amendment certified on December 18, 2015
- Thursday, December 17, 2015 on December 17, 2015
- Wednesday, December 16, 2015 on December 16, 2015
- Tuesday, December 15, 2015 on December 15, 2015
- Intro to combinatorics, part 2: Combinations on December 15, 2015
- Monday, December 14, 2015 on December 14, 2015
- Friday, December 11, 2015 on December 11, 2015
- 11 Dec 1936: Edward VIII abdicates on December 11, 2015
- Thursday, December 10, 2015 on December 10, 2015
- 10 Dec 1684: Newton shares work on gravity on December 10, 2015