Consolidated Morning Report of Brigades at Camp Tennallytown, D.C. Commanded by Major General John J. Peck. Dated February 11, 1862.

1 sheet, 26 by 8¼ inches, folded several times vertically. Signed by General Peck. The report lists 5 officers; plus Number of Companies, Field Officers, Regimental and Battalion Staff Officers, etc.; plus numbers For Duty, Sick, in Arrest or Confinement, Present and Absent, plus Horses; Infantry, Artillery, Cavalry, etc. Minor soiling; o/w a fine, clean document.
John Peck was born on January 4, 1821 in Manlius, New York. His father, John W. Peck, who had served in the War of 1812, was among the earliest and most active settlers of Onondaga County. Peck entered the United States Military Academy at age 18 and graduated eighth from a class of 39 on July 1, 1843 along with Ulysses S. Grant and many other soon to be famous military officers. With the outbreak of the Civil War Peck accepted a commission as brigadier general of volunteers on August 9, 1861. He was given command of a brigade defending Chain Bridge and the Northern defenses of Washington at Tennallytown. It was an important post, as the Federal Government was afraid that the Confederates would try to capture Washington, Indeed, they did try on July 11-12, 1864. President Lincoln observed the fighting at Fort Stevens.

Peck soon joined George B. McClellan's Army of the Potomac in Virginia. He commanded the 3rd Brigade, (55th NY, 62d NY, 93d Pa, 98th Pa & 102Pa) Couch's 1st Division, Keyes' IV Corps during the Peninsula Campaign. He served in the siege of Yorktown, and distinguished himself in the battles of Williamsburg and Fair Oaks. He was placed in command of the 2nd Division, IV Corps during the Seven Days Battles where he again distinguished himself. On July 25, 1862 he was promoted to major general of volunteers to rank from July 4, 1862 for his services in the Battle of Malvern Hill. Prior to the outbreak of the Civil War, Peck was said to have been friends with Generals Robert E. Lee, Joseph E. Johnston and P. G. T. Beauregard.