The squirrel call is the Mr Squirrel whistle, looks like that one in the link above. I got John and his brother Art started on them after I learned about it from a friend in northern Indiana, late 1990s. This is the silver disk with the hole thru it. The best way is to call crazy, blowing a broken pattern thru the whistle while shaking a small sapling to make a ruckus. It's a distress call and fox squirrels will come on the run to check it out. John's brother Art had a rat terrier that was a treeing squirrel dog. We got to hunting them where Art would hold the dog, I'd call, and we would shoot the squirrels with judo points then turn the dog loose to chase them down if not killed immediately. Quite a circus. I gave John and Art several of those calls. They told the local guys it was a squeaker from a toy elephant and Art would laugh, saying grown men were going into Walmart trying to buy squeaking toy elephants.
Kelly, Dad had one hanging from his bow rack in his little room in the building in Iowa, if you remember seeing it there. Silver disk the size of a quarter on a piece of shoestring cord.
R