The guest register.
The Guest Register is located in Silent Hill: Origins. Travis Grady can find it in the first floor reception of the Riverside Motel where he and Richard Grady stayed after his mother, Helen Grady, was committed into Cedar Grove Sanitarium.
Transcript[]
"(The pages are torn out, leaving
only one entry.)
Room 500
Name: Mr. R Grady
Other occupants: Son
Reason for visit?: Business/Pleasure
Check in Date: __ __ ___"