Here are references to what he was last seen wearing and possible sources. All say he was last seen wearing a hat; first two say pants and second two say shorts.
PPD (source: SIL?):
Clothing: Unknown color shirt, white
pants, white
hat
AMW (source: PPD?):
He was last seen wearing an unknown color shirt, white
pants and a white
hat.
NAMUS Report (source: daughter PB?):
Clothing: White
shorts, white knee socks, outer shirt unknown, always wore a v-neck undershirt, white belt, white
hat
Footwear: Reebok tennis shoes (white)
Project Jason (source: daughter PB?):
Clothing: He was wearing a white
hat, white
shorts, white belt, white knee high socks, and white reebok tennis shoes. He usually wears a white v-neck undershirt.
http://placentia.org/DocumentView.aspx?DID=102
http://www.amw.com/missing_persons/case.cfm?id=67544
https://www.findthemissing.org/cases/case_report_html/2706
http://projectjason.org/forums/index.php?action=printpage;topic=6671.0