Here's a little excerpt and a photograph from the news story that gives a sense of the bookstore's history:
The Gotham Book Mart was founded on West 45th Street in 1920 by Frances Steloff. It was the haunt of literary figures like Theodore Dreiser, John Dos Passos, H. L. Mencken, Arthur Miller, John Updike, J. D. Salinger and Eugene O’Neill. It exhibited the works of the artist Edward Gorey. Its customers included George and Ira Gershwin, Charlie Chaplin, Alexander Calder, Stephen Spender, Woody Allen, Saul Bellow, John Guare, Katharine Hepburn and Jacqueline Kennedy Onassis. At various points, Allen Ginsberg, LeRoi Jones and Tennessee Williams (for a day) worked as clerks there.
The Gotham Book Mart was famous for its literary eminences. A December 1948 party for Osbert and Edith Sitwell (seated, center) drew a roomful of brightlights to the Gotham Book Mart: clockwise from W. H. Auden, on the ladder at top right, were Elizabeth Bishop, Marianne Moore, Delmore Schwartz, Randall Jarrell, Charles Henri Ford (cross-legged, on the floor), William Rose Benét, Stephen Spender, Marya Zaturenska, Horace Gregory, Tennessee Williams, Richard Eberhart,Gore Vidal and José Garcia Villa. (Photo: Gotham Book Mart)