What about Misty Donna Copsey and Christina Lee White? I know could be a long shot but most carnivals travel the whole United States like a circus would so why wouldn't it make sense if he had also stopped in Washington.
Christina Lee White
Missing Age: 12 Years
Nickname/Alias: Chrissy
Height: 5' 4" (64 Inches)
Weight: 135 lbs
Race / Ethnicity: White / Caucasian
Date of Last Contact: April 28, 1979
Location: Asotin, Washington
Circumstances of Disappearance: Christina was last seen at the Asotin County Fairgrounds on April 28, 1979. She was riding a 10-speed Schwinn bicycle that has also never been located.
Hair Color: Brown
Piercing
Each of Christina's ears are pierced twice.
Misty D. Copsey
Missing Ag:e14 Years
Height: 5' 8" (68 Inches)
Weight: 120 lbs
Race / Ethnicity: White / Caucasian
Date of Last Contact: September 17, 1992
Location: Tacoma, Washington
County: Pierce County
Circumstances of Disappearance:Misty was last seen in the evening, walking home from the Puyallup Fairgrounds. Misty missed her bus home and has not been seen since.
Hair Color: Blond/Strawberry
Scar/mark: Misty has a mole under her right eye and a scar under her right knee.