- A Letter From The Rocky Mountains, 1836 (1836)
- Spalding, H. Harmon. (1958). The diaries and letters of Henry H. Spalding and Asa Bowen Smith relating to the Nez Percé mission, 1838-1842. Glendale, Calif.: Arthur H. Clark Co. IA
- Jessett, T. (1959). The Diaries and Letters of Henry H. Spalding and Asa Bowen Smith relating to the Nez Perce Mission 1838–1842. Edited by Clifford Merrill Drury. Glendale, Cal.: Arthur H. Clark Company, 1958. (Northwest Historical Series IV.) 379 pp. $12.50. Church History, 28(4), 445-446. doi:10.2307/3162106
- Letter from the Secretary of the Interior (Whitman Massacre)/American Congress vs. Protestantism in Oregon (1871)
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