From Dr. Harry C. Silcox and Jack McCarthy For the Northeast Times:
One of the main attractions in Northeast Philadelphia between 1929 and the 1960s was the Boulevard Pools. This paradise for swimmers was begun with the idea of producing entertainment on a “grand scale” in the Northeast. Everything would be bigger and better, with entertainment that would rival anything elsewhere. It all began in 1926 when famed pool architect William F.B. Koelte began planning a pool for the Northeast.
While it would be located in Mayfair, the pool’s target clientele would be from the more populated neighborhoods to the south.
I remember seeing the pools as a kid but never had a clue about the history. It is well worth the two minutes it will take you to read it. This is the link.