Howdy diggers,
MILCO turned me on to a website that shows aerial photos from 1939-40 for the entire state of Illinois. I started using it to find old parks and found one in a nearby town that looked like a good candidate. I got in a 4-hour hunt there and scored 3 silver coins including a 1901 Barber quarter! I posted a video on youtube ACE 250 finds (big) silver at the new park!
Thanks for looking, HH and on-on.