Stop in for a cup of coffee

Bet that cost about as much as the rest of the house when it was put in. 'Lifestyles of the rich and famous' to have AC back then.
It was originally a swamp cooler a/c system. There's 3 or 4 interconnected cisterns on the north side of the house. It would pull water from the the last one, run it through a coil and pump it back to the first one. Pretty fancy stuff for 1921.