The collection contains the papers and memorabilia of KDNA and its later ownership by the Double Helix Corporation. KDNA was a St. Louis listener-supported radio station that operated in St. Louis's Gaslight Square district from 1968 to 1973. It broadcasted at 102.5 MHz. The station was licensed to the Double Helix Corporation in 1972 and in the call letters were later changed to KEZK.
