TY - GEN AU - McMahon,Martin Thomas TI - Martin Thomas McMahon military pass, KW - McClellan, George Brinton, KW - United States KW - Army of the Potomac KW - Military passes KW - Alexandria (Va.) KW - History KW - 19th century KW - Civil War, 1861-1865 KW - Virginia N1 - The printed pass shows the date as 1861 but historical evidence indicates that it probably was issued in 1862; Open to research N2 - Military pass (January 6) issued to Mrs. Spalding, Mrs. Parker, and Mr. Davis for travel to Alexandria, Va., signed by Captain McMahon, aide to Gen. George B. McClellan, Army of the Potomac ER -