Radio Theory Simplified by Merle Duston, 1924.

Merle Norman Collector's Edition Hardcover Historical Reference Book 1936-1968

The Radio Manual By George Sterling 1929 2nd Printing

Merle Miller, That Winter, first paperback edition (1946)

1924 THE HOME RADIO How to Make and Use It

ABC Picture Method For Piano Beginners Book #1 BY Dale Shears Paperback 1946

AC Radio Manual by Merle Duston, 1929.