Strongfort Physical Culture Correspondence Course. Newark, 1917. Lacking lesson No. 1 (of 10), with 31 of the 40 photos. Good. Lionel Strongfort (real name Max Unger), was born in Berlin, Germany, on November 23, 1878. He began his stage career around 1897, becoming world renowned for his ?Human Bridge Act? (The Tomb of Hercules position). Strongfort?s greatest fame came after retiring from the stage in the early 1900s, launching his mail order course, ?Strongfortism,? which appeared in popular publications the world over.?For more than 25 years, ?Strongfortism? was one of the most successful train-by-mail correspondence schools.