That game in which Paciorek went 3/3 is also known as the "All-Rookie" game as the Colt 45's started an entire lineup or rookies. Here is a good link to stories on that game
Other trivia facts on that game include Jay Dahl would be killed in an accident in 1965 and be the youngest person to play major leaguer to die (Age 19)
http://www.astrosdaily.com/history/19630927/
Rich