A major exhibition of works from the Carl Solway Gallery’s 48-year collection highlights the work of conceptual artists like Buckminster Fuller, Nam June Paik and especially John Cage. Solway, now 75, befriended Cage in the late 1960s and eventually published the composer’s relatively little-known modular tribute to his own influences, Not Wanting To Say Anything About Marcel Duchamp. Some unsold inventory remains, Solway says.

(Through July 30 in Cincinnati.)