From the National Archives, RG 109, Ch. 6, Vol. 707-709; “Letters Received and Sent, Chimborazo Hospital. 1861-64.” 3 Vols: Vol. 708, p. 32

Chief Surgeon’s Office
Hd. Qrs. Richmond Jany 31^st 1863

Sir:

You are directed to order the nurses and attendants temporarily turned over to you from Genl Hospl No. 21, to report without delay to Surgeon Semple for duty in the Hospital under his charge.

Very Respectfully
   Yr. Obt. Servt.
     A. S. Mason
        Chief Surgeon

Surg. J. B. McCaw
     in charge Genl Hospl
                       Chimborazo