One of the places Pop art began was at 107 East 2nd Street, in December 1961. This was the location of Claes Oldenberg’s The Store, an indeterminate place to buy things. Those things were sculptural simulacra of everyday objects—fake hamburgers, articles of clothing, pastries—that could be bought as one would buy the items themselves. Marc Straus and his wife, Livia, have three rules that guide purchases for their art collection. 1. Love the work. 2. Choose what they believe to be the artist’s best piece. 3. Be able to afford it. In homage to The Store and Oldenberg’s love of ray guns (to which he was constantly referring), the Marc Straus Gallery is exhibiting work from many postwar Pop and Color Field greats, including Roy Lichtenstein, Ellsworth Kelly, and Frank Stella. —Jimmy Lux Fox