166 Mercer Street, SoHo Through Tuesday In 1971 Alex Harsley founded the nonprofit art organization Minority Photographers Inc. Two years later he opened the 4th Street Photo Gallery in a storefront at 67 East Fourth Street in the East Village, where he has exhibited generations of artists, young and old, and kept a welcoming, mentoring salon, which tends to keep jazz hours, opening midafternoon and operating well into the evening. The exhibition at June Kelly surveys a half-century of Mr. Harsley's own estimable art. Born in South Carolina in 1938 and a New York resident since childhood, he has made the city a primary subject of his classical brand of "street photography," from shots of life in Harlem in the 1950s to velvety black-and-white images of downtown, late at night and silent, under snow in the 1990s. The show includes portraits of familiar cultural figures (Muhammad Ali, John Coltrane), and of friends and colleagues like Robert Frank and David Hammons. Mr. Harsley was the cinematographer for Mr. Hammons's video "Phat Free," a highlight of the 1997 Whitney Biennial and widely seen elsewhere. He has collaborated with other artists, including Candida Alvarez and Dawoud Bey, over long periods, and made a video on the life of the painter Vincent Smith. Much of what he has done since the 1990s has been in video and film. It would be good to see some of that work, in addition to photography, in an institutional career survey. And surely the time has come to put a history of that career between the covers of a book.