The Wheeler survey last for years and generated a lot of data, including lovely Timothy O’Sullivan photographs. Yarrow worked directly for the Museum soon after this letter was written.
United States Engineer Office,
Explorations and Surveys West of the 100th Meridian,
Washington, D.C., Feb 9th, 1874
Bvt Lt. Col. G. Otis, USA
Some time since we forwarded to the Army Med. Museum some fragments of Indian Crania collected by Lt. Wheeler’s expedition in 1873. Will you kindly inform us if such specimens were rec’d.
Your obt. Svt.
Surg & Nat[uralist] to Exped[ition]