Introduction to Einstein, by William F. Hudgings 78274 [Subtitle: Ten Cent Pocket Series No. 408] [Author: William F. Hudgings] [Editor: E. Haldeman-Julius] [Link: https://www.gutenberg.org/ebooks/78274] note: link will be active within two hours of posting. Thanks to Tim Miller, Laura Natal and the Online Distributed Proofreading Team at https://www.pgdp.net Regards, Robert