The Brewers have also had a baseball portrayed on their uniforms (the M and B in the shape of a baseball and glove). I know it was on their hats during the '80s, at least.
The Dodgers had the baseball flying into the air on their unform fronts (i think) during the '70s.
Pretty sure the Padres in the '70s and '80s had a baseball in the "p".
These are off the top of my head - and potentially incorrect (
: ) - but this is all i can think of right now.
Interesting find, Vatican. Seems a few teams are not complying.