What is the retiring age of MLB? - Quora
Jersey Signed by Teammates to Cancer-Stricken Jim Umbricht at Auction
Astrodome Memories
Compiling the greatest players in Houston Astros history
Compiling the greatest players in Houston Astros history
Lot Detail - 1963-64 Houston Colt 45s Team-Signed Baseball Inc. 31
Jim Umbricht's “Stuff” @ Auction til May 18
There will never be another
Houston Astros, Baseball Wiki