GENERAL ORDERS,}     HDQRS. DEPT. OF THE TENNESSEE,
             No. 8.            }          Memphis, Tenn., January 21, 1863.
    Surg. C. H. Laub, U. S. Army, having reported for duty, and being the senior surgeon in the department, is hereby announced as chief of the medical department, and will relieve Surg. H. R. Wirtz in the duties of the same.
    By order of Major General U. S. Grant:
                                          JNO. A. RAWLINS,
                                                Assistant Adjutant-General.

Source:

United States. War Dept., United States. Record and Pension Office., United States. War Records Office., et al., "Vicksburg," The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies. Prepared, Under the Direction of the Secretary of War, by the Late Lieut. Col. Robert N. Scott, Third U. S. Artillery. Published Pursuant to Acts of Congress. Series I-Volume XXIV-In Three Parts. Part III-Correspondence, Etc. Washington: Government Printing Office. 1889, p. 5.