The gallery Marlena Vaccaro runs in Chelsea has the usual white walls and the usual nice light. What it does not have is artists under 60.

Talented 20-, 30- and 40-somethings need not apply. Ms. Vaccaro will not show them. They can send her JPEG after JPEG, the digital equivalent of slide after slide from an artist’s portfolio, but Ms. Vaccaro’s reply will remain: Wait. She will not lower the age threshold at the Carter Burden Gallery, at 548 West 28th Street, near Eleventh Avenue. And the artists on her roster could not be happier.

“This gallery has made age very hip,” said Angela Valeria, who is 76 and has a mixed-media painting on unstretched canvas on display in “Summer in the City,” a group show that runs through July 20.

The gallery began several years ago when Ms. Vaccaro decided that someone should counter an art world problem: Older, lesser-known artists were being passed by just because they were, yes, older. She had heard stories. Ms. Vaccaro was a painter and printmaker who also worked in mixed media. She had owned a gallery in TriBeCa.