House Reports, 1822.
No. 46. Free Negroes and Mulattoes. 16 p.
House Reports, 1840.
No. 44. Slavery, and Admission of New States. 7 p.
No. 46. Interracial Marriages. 8 p.
House Reports, 1843.
No. 9. Correspondence with Virginia in the Case of George Lattimer. 22 p.
No. 35. Recovery of Citizens of Massachusetts Unlawfully Imprisoned in Southern States. 11 p.
No. 41. Fugitive Slaves in Massachusetts. 37 p.
No. 48. Imprisonment of Colored Seamen. 5 p.
Senate Reports, 1842.
No. 63. Equal Rights in Railroad Accomodations. 13 p.
Senate Reports, 1851.
No. 51. Joint Special Committee on So Much of the Governor's Address as Relates to Slavery and on Petitions Praying to the Legislature to Instruct Their Senators and to Request Representatives in Congress to Endeavor to Procure a Repeal of the Fugitive Slave Law. 19 p.
Harris, Thaddeus Mason. A Discourse Delivered Before the African Society in Boston, 15th of July, 1822: On the Anniversary Celebration of the Abolition of the Slave Trade. Boston: Printed by Phelps and Farhnman, 1822. Couretsy of the Massachusetts Historical Society.