The Joseph & Hanna Circle
The Joseph & Hanna Circle is a non-profit foundation formed by the friends and children of Joseph and Hanna Henderson. Upon the deaths of Joseph and Hanna, and for many additional years, the family gathered records of the founding of Maple Grove and other memorabilia. In 1929 they helped to form the Maple Grove Historical Society. The foundation donated all the collections and holdings to the new museum and acts as an advisory committee to the society board.