OK, so I previously reported on the boy who called Crimestoppers from a payphone in Forrest, IL, and that was the one call that stuck with Patty because it seemed legit and wasn't proved to be a hoax.
Well I found an article from the St Joseph Leader (this is a tough paper to track down!!) The article is from 8/17/90.
Again, the call came on August 3, 1990. The caller said the following according to Chief Deputy Sheriff Jim Kostreba "He told the call taker he was phoning from Forrest, IL, and that he needed help". He said there was a red car involved and that he was a with a man but he didn't know his name, and then he said he had to go and hung up." The call lasted less than a minute.
Illinois authorities released information to the media, and a woman who works at a convenience store called to say she saw "someone who she thought was similar to Jacob" two days before, in the store. She served the boy and the man and soon after saw the boy make a phone call from a booth across the street from the store. She saw the man put the boy into a red station wagon and drive off.
Kostreba acknowledged the dept receiving other calls that were hoaxes but "this call is different".
In another article, same issue of same paper, Patty Wetterling notes optimism about that call, saying that the woman reported that the boy was thin like Jacob, had a "shabbily-cut home haircut" and a large mole on his face. (Jacob has a small mole). Patty expressed gratitude to the woman coming forward and submitting herself to a barrage of media attention.