Thanks for posting these Mike Ringo photos. Mike was a photographer from Whitehall, Pa. that focused on open wheel cars. His years of shooting races spanned from the late 30's at places like Allentown FG, Lebanon, Dorney Park, Reading, Williams Grove, Hatfield, Langhorne up to the 70's at Trenton, Pocono and others.
He started selling off his negatives thru a little ad in Cavalcade of Racing. I was lucky to buy some of those negs and slides. He was a real racing pro.