1958The Red and Whitey BluesMay 29, 1958 / Down Beat / Dom Cerulli & John Tynan.How the Stereo Disc Works: The facts on the 45/45 systemJuly 1958 / Radio Electronics Magazine / Norman H. Crowhurst1974Notes re: Howard Holzer’s VP-1000 digital delay variable pitch systemAugust 1974 / Audio Magazine2017Bernie Grundman InterviewJuly 7, 2017 / Tommaso Gambini