The Willamette Heritage Center is a non-profit museum located in Salem, Oregon. Formed from the merger of two established historical organizations (the Mission Mill Museum and the Marion County Historical Society) the WHC collects, cares for, interprets, showcases, and promotes understanding of an education about the history of the Mid-Willamette Valley region, including Marion County and the greater Salem area. It is anchored by the historic early settlement buildings dating to the 1840s, the Thomas Kay Woolen Mill and its archival and library holdings.