Susan Rosenberg's research files contain information about all aspects of Rohrer's life, documents ranging from photographs of his works to articles about the Mennonite religion. Jane Rohrer, a relative of the painter, also gave much documentation to the museum about Rohrer's life including copies of his birth certificate, correspondence between him and his patrons, photographs of works of his art she owned, recorded interviews with Rohrer, her account of his life, etc.