Twenty-one letters written by Lorenzo Lorain between 1855 and 1861. The letters contain descriptions of Lorain’s military service, including yellow fever epidemics, the forced removal of Native peoples from the western region of the Oregon Territory to the Coast Reservation, and his photography. The letters are addressed from West Point Academy, Aspinwall, Fort Dalles, San Francisco, Fort Walla Walla, Fort Umpqua, and Camp Day near the Klamath Basin. The correspondents include Lorain’s father, Dr. Henry Tilden Lorain, and his sisters, Mary Jane Ashman and Martha (Merty) Eliza Lorain.