(Now that I look at it, in that picture of Gleeson with the 1957 Athletics, he's wearing a 1960 cap. [The first time the Athletics ever wore anything to acknowledge a home city; it was always either the big "A" or "Athletics" and the word "Philadelphia" was never on any uniform.] Was Gleeson a roving instructor in 1960, and that's a Spring Training pic? Is it an anachronistic PhotoShop job? Odd.)
Anyways…we have Vernon as a Yankee coach upthread, and as an Expo in the Coaches' Pack, but here is one of his earlier gigs, with the 1965 Cardinals:
