Fonds comprises correspondence regarding Burpee's geneological research into his uncle, James De Mille, research notes and secondary materials about De Mille, and two manuscripts by Burpee on De Mille. MS-2-175
Fonds comprises 73 leaves of correspondence and a typescript essay by Wayne Kime called "The American Antecedents of James De Mille's A Strange Manuscript Found in a Copper Cylinder." MS-2-369, SF Box 41, Folder 13 ; SF Box 39, Folder 4