Here is a portion of the 1938 aerial photos of San Francisco that shows the extensive farming in the area of Balboa Park below Havelock Street. This land had been used for the purpose of growing food from the 1890s until I-280 freeway was built in the 1960s. Some part of it was cultivated by inmates from the Ingleside Jail, but there was also a nursery business which leased land here.

 (Visit DavidRumsey.com to see more of 1938 aerials.)