- Zenith Radio: The Early Years : 1919-1935 (Schiffer Book for Collectors)
- The Zenith Trans-Oceanic, the Royalty of Radios: The Royalty of Radios (Schiffer Book for Collectors)
- Zenith Radio: The Glory Years, 1936-1945: Illustrated Catalog and Database
- Zenith Radio, The Glory Years, 1936-1945: History and Products (Schiffer Book for Collectors)
- Heinrich Hertz, the beginning of microwaves: Discovery of electromagnetic waves and opening of the electromagnetic spectrum by Heinrich Hertz in the years 1886-1892