Freemason. Financial reports (1945–1949) and bylaws (1906–1944) of the Guthrie (Oklahoma) Lodge of Freemasons; typescripts (n.d.) of speeches and presentations made by Rittenhouse to Oklahoma freemasonry groups regarding the seventy-fifth anniversary of Indian Territory freemasonry, the fifty-sixth anniversary of Oklahoma Territory freemasonry, and the fortieth anniversary of freemasonry in the state of Oklahoma; and publications (1890–1949), including Joseph Samuel Murrow’s Masonic Monitor (1903) and a program (1949) marking the fiftieth anniversary of freemasonry in Oklahoma.