Thursday, September 10 Hamiltonian Gallery – 7 p.m. Artists Adam Ryder and Dan Perkins host an artist talk about their recent work. For details, click here. Hamiltonian is located at 1353 U St. NW.   Friday, September 11 Touchstone – 6 p.m. to 8:30 p.m. Touchstone presents the opening of three new exhibitions for September….