The Eagle River Historical Society is a local affiliate of the Wisconsin Historical Society. It operates two museums:
The Eagle River Historical Museum, located (in 2009) on the grounds of Trees for Tomorrow. It contains, per the Wisconsin Historical Society website: Logging artifacts; family histories; [high school] class pictures 1935-1974, memorabilia of schools, boat racing, Snowmobie Derby; and Early plat maps.
Eagle River Historical Society Depot Museum. t contains, per the Wisconsin Historical Society website: Chicago & Northwestern Rail Road Memorabilia and artifacts; trapping artifacts; Indian artifacts-wood sculpture; photos circa 1880's-1930's; gambling memorabilia; displays of early resorts & camps; plat maps of early Eagle River streets; and an ice castle display.