Only four players- all pitchers- have worn 56 for the Padres. Ricky Bones was the first in '91. Kevin Walker had it from 2000 through '03 and Scott Cassidy wore it in '05 and '06. Mike Ekstrom was the most recent in '08 and '09.
From An Unlikely Source! is just another nerdy baseball card blog. I collect a handful of players but my main focus is Joey Cora cards. You have too many of them and I'd be glad to help you out with that.