Erick Trickey himself covers the story. It's a nice long profile of Phil Torsney, with some news Amy's case. Here's my favorite excerpt:
All the girls who received similar calls, including Amy, had visited the Lake Erie Nature and Science Center in Bay Village. In 1989, kids who visited the center signed a log book with their names and addresses. That could be a key to the case — or just a coincidence, since the nature center was a popular place for school field trips.