Bethlehem, PA is the home of Just Born, manufacturer of the ubiquitous Easter Peeps. It’s also an easy word to misspell. Bethleham* brings up 10 entries in OhioLINK and is a "high probability" typo on the Ballard list. Bethelhem, on the other hand, is a "lowest probability" typo with 1 hit in OhioLINK.
(Peeps buddy icon, from the Just Born Web site)