Misc: On a standard computer keyboard, this is the letter just to the right of Z?

Questions

A 20-cent coin was authorized by U.S. Congress (It only lasted 3 years)?

Jean Harlow, sex goddess of the 30s, born?

"Star Spangled Banner" officially became US national anthem?

U.S. wins Battle of Bismark Sea over Japan?

U.S. and Philippine forces recaptured Corregidor?