1
Oxford Dictionary

4
Yalta Conference

6
Elizabeth II

7
The Beatles

 8
Mary, Queen of Scots
Dawes Act

9
Daylight Savings Time

12
Fugitive Slave Laws
Slobodan Milosevic

13
Galileo Galilei

14
St. Valentine
Penicillin 

15
U.S.S. Maine

16 
King Tut
Fidel Castro

17
Missouri Compromise

18
Huckleberry Finn
Pluto

19
Donner Party
Executive Order 9066

21
Battle of Verdun
Malcolm X

23
Iwo Jima

24
Marbury v. Madison
Andrew Johnson
Zimmerman Note

27
Matthew Brady

28
DNA