Here it is, by popular demand and in response to this post, your new city map of old San Antonio, from sometime between 1923 and 1933.
Take your time to look it over, but be warned -- this is a big file. In fact, I think this is the biggest graphic file I have ever assembled. It may take some time to load for you. If you have problems, pop into the comments and let me know. I might make another post with the individual pieces I scanned in.
Some things to look for:
-- The original city limits, which are remarkably geometrical.
-- Other military installations near Kelly Field.
-- The neighborhoods now displaced by Hemisfair Park, the Convention Center, and the Alamodome.
-- What the land the zoo is on used to be called.
-- What St. Anthony High School used to be.
-- Any other point of interest that catches your eye.