After leaving Columbia in 1960, Berkson started work as an editorial associate at ARTnews, where he continued for the next three years. During the remainder of the 1960s, he was a regular contributor to both ARTnews and Arts, guest editor at the Museum of Modern Art, an associate producer of a program on art for public television, and taught literature and writing workshops at the New School for Social Research and Yale University. After moving to Northern California in 1970, Berkson began editing and publishing a series of poetry books and magazines under the Big Sky imprint and taught regularly in the California Poets in the Schools program. In 1975 he married the artist Lynn O'Hare; their son Moses Edwin Clay Berkson was born in Bolinas, California, on January 23, 1976. He also has a daughter, Siobhan O'Hare Mora Lopez, and three grandchildren, Henry Berkson and Estella and Lourdes Mora Lopez. His friendships during his California years included those with; Joanne Kyger, Duncan McNaughton and Philip Whalen. Berkson is the author of some twenty collections and pamphlets of poetry—including most recently Portrait and Dream: New & Selected Poems and Expect Delays, both from Coffee House Press. His poems have also appeared in many magazines and anthologies and have been translated into French, Russian, Hungarian, Dutch, Czechoslovakian, Romanian, Italian, German and Spanish. Les Parties du Corps, a selection of his poetry translated into French, appeared from Joca Seria, Nantes, in 2011. Other recent books are What's Your Idea of a Good Time?: Letters & Interviews 1977-1985 with Bernadette Mayer;BILL with drawings by Colter Jacobsen; Ted Berrigan with George Schneeman; Not an Exit with Léonie Guyer and Repeat After Me with John Zurier. Beside the aforementioned collaborations, he executed extensive projects with visual artists Philip Guston, Alex Katz, Joe Brainard, Lynn O'Hare and Greg Irons, as well as with the poets Frank O'Hara, Larry Fagin, Ron Padgett, Anne Waldman and Bernadette Mayer. In the mid-1980s, Berkson resumed writing art criticism on a regular basis, contributing monthly reviews and articles to Artforum from 1985 to 1991; he became a corresponding editor for Art in America in 1988 and contributing editor for artcritical.com and has also written frequently for such magazines as Aperture, Modern Painters, Art on Paper and others. In 1984, he began teaching art history and literature and organizing the public lectures program at the San Francisco Art Institute, where he also served as interim dean in 1990 and Director of Letters and Science from 1993 to 1998. He retired from SFAI in 2008 and later held the position of Professor Emeritus. During the same period, he was also on the visiting faculty of Naropa Institute, California College of Arts and Crafts and Mills College. Berkson continued until the end of his life to lecture widely in colleges and universities. He published three collections of art criticism, to date, the last being For the Ordinary Artist: Short Reviews, Occasional Pieces & More''. As a sometime curator, he organized or co-curated such exhibitions as Ronald Bladen: Early and Late, Albert York, Why Painting I & II, Homage to George Herriman, Facing Eden: 100 years of Northern California Landscape Art, George Schneeman, Gordon Cook: Out There, George Schneeman in Italy, and, with Ron Padgett, A Painter and His Poets: The Art of George Schneeman. In 1998, he married the curator Constance Lewallen, with whom he lived in the Eureka Valley section of San Francisco. Berkson died of a heart attack in San Francisco on June 16, 2016 at the age of 76. Berkson's archive of literary, artistic and other materials, including extensive correspondence and collaborations with O'Hara, Guston, Brainard, Mayer and others through the years is maintained in the Special Collections at the Thomas J. Dodd Research Center, .