Note:
==Publisher==
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- Winter 1928. Experimenter Publishing Co., Inc. Editorial office, 230 Fifth Ave., New York, N. Y. Gernsback Ownership Above information not indexed by Bleiler. Winter 1928 had no staff entry. A Further presumption is made that the Winter 1928 issue had no publisher, Owners, Editors, or Staff entries beyond Gernsbacks editorial.
- Spring 1928 - Winter 1929. Experimenter Publishing Co., Inc. Editorial offices, 230 Fifth Ave., New York, N. Y. Gernsback Ownership
- Spring 1929 - Summer 1929. Experimenter Publishing Co., Inc. Editorial offices, 230 Fifth Ave., New York, N. Y. Irving Trust Company, receivership, trustee in bankruptcy
- Fall 1929 - Summer 1930. Experimenter Publishing Co., Inc. Editorial offices, 381 Fourth Ave., New York, N. Y. B. A. Mackinnon and H. K. Fly Ownership
- Fall 1930 - Summer 1931. Radio-Science Publications, Inc. Editorial offices, Editorial offices, 381 Fourth Ave., New York, N. Y.
- Fall 1931 - Summer 1932. Teck Publishing Corporation. Editorial offices, 230 Fifth Ave., New York, N.Y.
- Fall/Winter 1932 - Fall 1934. Teck Publishing Corporation. Editorial offices, 350 Hudson St., Ney York, N. Y.
- Winter 1928. Presumed Hugo Gernsback. Not listed in publication.
- Spring 1928 - Winter 1929. Hugo Gernback
- Spring 1929 - Summer 1929. Arthur H. Lynch
- Fall 1929 - Spring 1930. T. O'Conor Sloane
- Summer 1930 - Fall 1934. T. O'Conor Sloane (not listed on masthead)