Your search for Yamhill County, Oregon revealed 11 records:

Date:	Source:	Location:	Description:
Spring 2000	Sasquatch Information Society	Carlton	Man hears squeal, sees tracks, then creature
Winter 1999	oregonbigfoot.com	Carlton	Men find tracks 16" to 18" long and 5" to 7" long, with bulbous big toe in snow
1980's (late, or early 90's)	The Track Record	Carlton	Man says neighbor described almost running over a bigfoot near his home
Spring 1984	BFRO	Yamhill	Loud vocalizations heard on logging road 15 miles west of Yamhill
Winter 1978	The Bigfoot Casebook	Newberg	Same witness saw Bigfoot on 2 nights. It was 6 ft tall, 350-450 Ibs, had a fiat face and square teeth, and was covered with 4-in hair
Summer 1970	GCBRO	Sheridan	Boy sees a Sasquatch
Fall 1980's or 1990's	oregonbigfoot.com	McMinnville	Country store clerk tells of hunters terrified by Sasquatch sighting
fall 2003	oregonbigfoot.com	McMinnville	Hunter reports smell, grunting sound, limbs breaking
1976	oregonbigfoot.com	McMinnvlle	Vocalizations frighten woodcutters
summer 1978	oregonbigfoot.com	McMinnville	Man recalls hooting back and forth with something while gathering firewood
fall 2005	oregonbigfoot.com	Yamhill	Man has sighting of two light-colored juvenile creatures