Mental Radio, by Upton Sinclair                                           63693   [Contributor: William McDougall]   [Contributor: Albert Einstein]   [Contributor: Walter Franklin Prince]   [Link: https://www.gutenberg.org/6/3/6/9/63693 ]   [Files: 63693-0.txt; 63693-h.htm] Thanks to Richard Tonsing, Tim Lindell and the Online Distributed Proofreading Team at https://www.pgdp.net (This book was produced from images made available by the HathiTrust Digital Library.)