Construction on the Oswego Methodist-Episcopal Church began in 1848, was completed in 1850, and the debt was retired before the church was dedicated in 1854. In 1901, patterned glass replaced the old clear panes, and Tirzah Minard, widow of a former pastor, donated a new bell tower and bell. The congregation dissolved in 1913, and after the building was vacated, the Oswego Grade School District purchased it in 1914. Its single classroom was divided into two in 1930, a third classroom was added to the rear in 1936, and in the 1940s a fresh coat of white paint led to the name Little White School, distinguishing it from the larger Red Brick School nearby. After East View School opened in 1958, the building became a school district storage facility, then reopened in 1962 for junior high classes during an enrollment boom before holding its last classes in the spring of 1964 and returning to storage use. In 1976, the non-profit Oswegoland Heritage Association launched a Save our School initiative to preserve the school and create a community museum, and in 1976-77 a cooperative agreement joined the association, the Oswego School District, and the Oswegoland Park District in restoring the building and maintaining the site as Heritage Park. Restoration was completed in 2002 after 25 years of volunteer labor, in-kind donations, and park district support. In 2010, ownership of the Little White School Museum and Heritage Park was transferred to the Oswegoland Park District, and in 2011 the museum received historic landmark status from the Oswego Historic Preservation Commission and the Village of Oswego.