Was Truman ambidextrous

Answer 1

The late U.S. president was indeed ambidextrous. At Baseball games, he threw multiple ceremonial pitches with either hand, and performed various other actions without noticeably preferring one hand over the other.

Answer 2

It can be assumed that he was right handed. In the link bellow he can be seen signing a bill proclaiming February 1 as National Freedom Day. http://www.medaloffreedom.com/HarryTruman.htm