This page contains all sections of the web pages of the National Archives and Records Administration's Record Groups 77 and 94 which deal with USMA and a link to RG 404 which deals entirely with USMA.
The following information comes from http://www.nara.gov/guide/rg077.html
Records of the Office of the Chief of Engineers
(Record Group 77). 1789-1988. 26,437 cu. ft.
77.2 GENERAL RECORDS OF THE HEADQUARTERS OFFICE
11,266 lin. ft.
History: Corps of Artillerists and Engineers authorized for three years
by an act
of May 9, 1794 (1 Stat. 366), and continued indefinitely by an act of March 3,
1795 (1 Stat. 430). Abolished by an act of March 16, 1802 (2 Stat. 132), with
artillerists organized as the Regiment of Artillerists, and engineers separately
organized as the Corps of Engineers. By same act, Corps of Engineers
designated the faculty and staff of the U.S. Military Academy, with headquarters
in West Point, NY. The Corps of Engineers and the U.S. Military Academy
were collectively designated the Engineer Department, with headquarters
transferred to New York City, 1815. Commandant of the Corps of Engineers,
variously styled Principal Engineer, Chief Engineer, and lastly, Chief of Engineers,
transferred his headquarters to Washington, DC, and established OCE, 1818.
Textual Records: Annual reports to the Secretary of War, 1842-67. Monthly
returns, 1832-1918. Recruitment returns, 1855, 1860-65. Monthly returns
received from the 1st, 2d, and 3d Engineer Battalions, 1861-1916; and the
engineer detachment at the U.S. Military Academy, 1902-12. Monthly returns
received from engineer posts at Washington Barracks, DC; Jefferson Barracks,
St. Louis, MO; Yerba Buena Island, CA; and Willetts Point, NY, 1866-1915.
Records of the Adjutant General's Office, 1780's-1917
(Record Group 94). ca. 1775-1928 (bulk 1783-1920). 38,126 cu. ft.
94.2.3 Records relating to regular army personnel
Textual Records: Registers of enlistments, 1798-1914. Enlistment papers,
1798-1912. Orders, discharges, medical and burial records, and other records
concerning regular army personnel ("Personal Papers"), 1812-1912. Certificates
of disability, 1812- 99. Records relating to deceased soldiers ("Final
Statements"), 1862-99. Registers of discharges, 1872-83. Reports of physical
examinations of candidates for admission to the U.S. Military Academy,
1861-1908. Recommendations for promotions, 1917. Record of retired men,
1915-20. Register of prisoners, 1879-1901.
Microfilm Publications: M233.
94.2.6 Records relating to the U.S. Military Academy
History: Established at West Point, NY, as a War Department organization,
an act of March 16, 1802 (2 Stat. 137). Under Chief of Engineers, 1802-66;
Inspector General of the Army, Office of the Secretary of War (OSW),
1866-71; and Military Academy Office, OSW, 1871-77. With Post of West
Point, administered as a separate military department under General-in- Chief of
the Army, 1877-82. Under Secretary of War, 1882-1947; and Secretary of the
Textual Records: Letters sent, 1812-94, 1898-1904. Letters received, with
reports and related papers, 1819-1904. General and special orders, 1814-1915.
Annual and semiannual rolls of cadets, 1812-1915 (with gaps). Merit rolls,
1818-66. Class reports and conduct rolls, 1820-25, 1831-94. Records relating
to examinations, 1816-1900. Registers of cadets, 1803-94. Cadet warrants,
1895-1917. Cadet application papers, 1814-66, with index. Register of
candidates for appointment, 1866-94. Records relating to unsuccessful
applications, 1866-76. Records relating to the Board of Visitors, 1823-1904.
Microfilm Publications: M91, M688, M1002.
Related Records: Records of the U.S. Military Academy, RG 404. Record
copies of publications of the U.S. Military Academy in RG 287, Publications of
the U.S. Government.
Records of the United States Military Academy [USMA]
(Record Group 404). 1800-1993. 1,426 cu. ft.
This is quite long, so one should simply see the original of RG 404 at the National Archives.