Immanuel Presbyterian Church has corporate minutes; organizational records of governing bodies, committees, and other subgroups; and membership records. In the church's library are publications dealing with the history of the church, which is over one hundred years old and was known as a leader in the neighborhood, the city, and the Presbyterian community during the 1930s, 1940s, and 1950s.…

The June L. Mazer Lesbian Collection, formerly the West Coast Lesbian Collections, was founded in Oakland, California, in 1981. Six years later it was moved to Los Angeles by Connexxus Women's Center/Centro de Mujeres, and it acquired its present name in 1987 after the death of June L. Mazer, a community activist and an invaluable supporter of the collection.