From the Richmond Dispatch, 1/12/1863, p. 1, c. 5
Medical Department. – Surgeon E. S. Gaillard the Medical Director on the staff of Major-General G. W. Smith, has recovered from his recent attack of small-pox, and has received leave of absence for thirty days. His duties will continue to devolve upon Surgeon Thos. H. Williams of the regular army. The Medical Directorship of this Department is a most important position.