Your search for Union County, Oregon revealed 7 records:

Date: Source: Location: Description:
Fall 1988 BFRO Palmer Junction Elk hunters find two sets of bare-foot tracks in the snow near Palmer Junction
Fall 1967 The Bigfoot Casebook Joe Jackson saw Bigfoot standing by road; it ran into brush
1950 's (late) The Track Record #76 Ukiah Wade Bettis, while elk hunting, found 12" track in moist earth near camp
summer 1970 oregonbigfoot.com Starkey Follow-up to vocalization encounter
summer 1970, 1999 oregonbigfoot.com starkey and riggins Man recalls hearing vocalizations in Union County, and in Idaho
Fall 1967 oregonbigfoot.com La Grande Late train engineer spots bipedal creature walking on hillside
2008 oregonbigfoot.com Medical Springs Vocalization heard near Medical Springs