1. The first abolition society in the United States Collection: Samuel J. May Anti-Slavery Pamphlet Collection Publisher: J.B. Lippincott Publication Place: [Philadelphia] Date: 1912 Format: Book
2. Negroes who owned slaves Collection: Samuel J. May Anti-Slavery Pamphlet Collection Publisher: Popular science monthly? Publication Place: New York Date: 1912 Format: Book
3. Missouri and New Hampshire Collection: Samuel J. May Anti-Slavery Pamphlet Collection Publisher: s.n. Publication Place: Concord, N.Y.? Date: 1912 Format: Book
4. Wisconsin Memorial Day annual, 1912 Collection: Samuel J. May Anti-Slavery Pamphlet Collection Publisher: Democrat Print., state printer Publication Place: Madison, Wis. Date: 1912 Format: Book