I've been working with the great-grandson of Dr. Harry March in researching Dr. March's life and contributions to pro football. He was reading “The League-How Five Rivals Created the NFL and Launched a Sports Empire,” by John Eisenberg and in passages about Tim Mara, Eisenberg covers the American Professional Football League which Dr. March started in 1935-1936. Eisenberg states that March started the new league as payback for being booted off the Giants and eventually out of the League (due to a kerfuffle with Marshall). Eisenberg writes, “"Seeking revenge, he [March] gained backing of Wall Street investors, solicited franchise bids from fifteen cities, and announced a new league with eight teams would kick off in 1936."
The question is, what was the source for claiming that this league was started for "revenge?" I looked in "The Outsiders" by Bob Gill and Tod Maher and they also ascribe the motivation for the league to "revenge" (see photo).
We were wondering if there were any contemporary letters, interviews, documents or sources for the idea that March was motivated by revenge - and revenge against who exactly? Mara? Marshall? All the owners? So far, I have found one clipping where March talks about the new league but would appreciate any other background information.
