From the National Archives, RG 109, Ch. 6, Vol. 707-709; "Letters Received and Sent, Chimborazo Hospital . 1861-64." 3 Vols: Vol. 708, p. 24
General Hospital No 9
Richmond Va Sept 1st/63
Surg. J. P.[sic] McCaw
Yours of the 31st ult. has been received, informing me that the ambulances have been in the habit of taking their passenger to No. 1 & No. 3 Divisions of your hospital under instructions from this hospital. If any such have been given, it was done without my knowledge and I am pleased that you have apprized me of this irregular distribution.
In compliance with your request I have instructed the Officer in Charge of the Ambulances to report all patients transferred from this hospital to Chimborazo at your Central Office.
Yr Obt Servt
Jno. J. Gravatt
Surg. In charge