I have access to an online newspaper archive database through my college. There are over 100 articles about Mark's case so I thought I would post things I found out that haven't been discussed in this thread yet.
1.) The brush fire was on Bayshore Road.
2.) A custodian (another article said he was a ranger) at Cape May County Park South reported seeing Mark with a young girl sometime between 3:30-4:00 (
Different articles give different times)
3.) Mark's sneaker was found 75 yards from his house
4.) Mark lived at Sun Ray (Beach) Road.
5.) A girl who lived on the same street as Mark, and was friends with him, was locked in a dirty closet for hours every night by her grandmother. LE was looking for a possible connection between the two cases (1993).
6.) A sketch of Mark's abductor (according to LE) showed a man in his 20's with dark, greasy hair, and wide-rimmed glasses. He was believed to be a Philly resident, and was driving a white compact car. In the sketch, he was wearing a plaid shirt. Witnesses described seeing this man talking to Mark (1993).
7.) Before he went to see the brush fire, Mark told his mom that was excited about a visit he was going to make that evening to the home of one of his teachers. He had a crush on the teacher's daughter.
Here's an archived version of a website Mark's parent set up for him:
http://web.archive.org/web/20050410074133/http://www.markhimebaugh.com/