Science and Invention and Radio News -1922A.jpg Science and Invention -1926AThumbnailsScience and Invention Incorporating Experimenter -1926AScience and Invention -1926AThumbnailsScience and Invention Incorporating Experimenter -1926AScience and Invention -1926AThumbnailsScience and Invention Incorporating Experimenter -1926AScience and Invention -1926AThumbnailsScience and Invention Incorporating Experimenter -1926AScience and Invention -1926AThumbnailsScience and Invention Incorporating Experimenter -1926A

This ad for both magazines was on the back of the Experimenter's Guide #2, for Radio-Phone Receivers. Both issues shown are July, 1922 issues, and this ad probably appeared a couple of months past July.