Before McCarren Park housed kickball and day drinking, it housed a farm (pictured above). From Untapped Cities:
In 1914, the park became the site of the first children’s farm in Brooklyn. During the farm’s first season, 240 “little farmers” attended to 120 plots of land that were each 8’x4′. There, they grew a range of produce, including radishes, carrots, beats, beans, onions, corn, and lettuce. The garden also had a “Farm House.” By the next year, the Farm House shelter became a social center for clubs and church groups.
Untapped Cities put together a great list of facts about McCarren Park. Check it out here.
Here’s one more picture of the farm house from 1934: