(London, 1775.) -- ----_Same, Part Second.

Containing his last Epistle and other Writings_.

(London, 1775.) -- ----_Some Considerations on the Keeping of Negroes.

Recommended to the Professors of Christianity of every Denomination_.

(Philadelphia, 1754.) -- ----_Considerations on Keeping Negroes; Recommended to the Professors of Christianity of every Denomination.