It was 1970, a year after Steve Cannon’s novel, “Groove, Bang and Jive Around,” was published, that he used proceeds from its sale to buy a three-story townhouse on East Third Street, just east of Avenue C, with a brick facade and a hospitable stoop.

Over the decades, that stoop became a gathering spot where Mr. Cannon and friends, including many from the nearby Nuyorican Poets Cafe, held wide-ranging conversations that lasted all night. Those freewheeling discussions moved indoors in 1991, when Mr. Cannon turned parts of the building into a gallery and salon known as A Gathering of the Tribes. There, he and others published magazines and organized readings and art exhibitions.

“It became a center for poets, musicians and artists from all over the world,” Mr. Cannon said. “People realized they could be themselves there because it gave the feeling of being at home.”

Faced with debt, Mr. Cannon sold the building in 2004, with an agreement that he could continue living and holding events on the second floor. That arrangement began to fray in 2011, and last year Mr. Cannon, 79 and blind, moved out of his home of more than 40 years.

The photographer Gaia Squarci spent several weeks documenting life inside the Tribes gallery. Her images show Mr. Cannon’s comrades arriving for final farewells, helping to pack books and using saws to remove a section of wall that had been painted by the artist David Hammons.

Mr. Cannon moved into an apartment a few blocks away. He has continued to organize readings, but they are now held in other places. Friends still visit to work on an anthology of art and poetry that Mr. Cannon is putting together or to discuss their own projects. Sometimes, he said, they reminisce about the good times on Third Street.

“It’s the same spirit here,” he said, “Only there’s less room and fewer people stopping by.”

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