1920s remote control technology w/illustrations National Radio Institute

Old 1927 book on the technology of radio remote control. This is published by the National Radio Institute as Lesson No. 47 of their - Complete Course in Practical Radio -.

This has 28 pages with lots of drawings, schematics and photos. It covers early attempts to build remote controlled cars, remote controlled airplanes, torpedoes and more.

This has some light surface soil to the covers from years in storage in an attic.