For years, Barbara Johnstone, a professor of linguistics at Carnegie Mellon University here, bought shares in a C.S.A. — a community-supported agriculture program — and picked up her occasional bags of tubers or tomatoes or whatever the member farms were harvesting.
Her farm shares eventually lapsed. (“Too much kale,” she said.) But on a recent summer evening, she showed up at a C.S.A. pickup location downtown and walked out carrying a brown paper bag filled with a completely different kind of produce. It was no good for eating, but it was just as homegrown and sustainable as what she used to get: contemporary art, fresh out of local studios.
“It’s kind of like Christmas in the middle of July,” said Ms. Johnstone, who had just gone through her bag to see what her $350 share had bought. The answer was a Surrealistic aluminum sculpture (of a pig’s jawbone, by William Kofmehl III), a print (a deadpan image appropriated from a lawn-care book, by Kim Beck) and a ceramic piece (partly about slavery, by Alexi Morrissey).