Class of 1866

Vol. IV
p161 [Supplement, Vol. IV: 1890‑1900]

Military History. — Appointed

(Major, Staff — Signal Corps, Dec. 18, 1890)

after a competitive examination before a Board of Officers appointed by the Secretary of War, in compliance with the law organizing the Signal Corps of the Army. — Detailed for duty with the Weather Bureau, Washington, D. C., by direction of the President, after the transfer of that Bureau to the Department of Agriculture, July 1, 1891. — Continued with the Weather Bureau, serving as Assistant Chief and as Supervising Forecast Official, until the Spanish-American war, when he was relieved at his own request to enter active service with his Corps.

(Lieut.‑Colonel, Staff — Signal Corps, March 15, 1897)

(Colonel and Chief Signal Officer U. S. Volunteers, May 20, 1898)

and had charge of the organization of the Volunteer Signal Corps.

(Colonel, Staff — Asst. Chief Signal Officer, July 8, 1898)

(Resigned his Commission in the Volunteer Service, July 20, 1898)

Served in Cuba, as Chief Signal Officer of the Division, having charge of the reorganization of the telegraph service of the island, and control of all Spanish telegraph lines, from Dec. 21, 1898 to –––––

Civil History. — Received at the World's Columbian Exposition a medal of honor and diploma for treatise on International Meteorological Observation.

Vol. V
p131 [Supplement, Vol. V: 1900‑1910]

Military History. — Served: In Cuba, as Chief Signal Officer of the Division, having charge of the reorganization of the telegraph service of the island, and control of all Spanish telegraph lines, from Dec. 21, 1898 to May, 1901.

(Brig.‑General, U. S. A., July 6, 1904)

Brig.‑General, U. S. A., Retired July 7, 1904,
at his own Request, over 40 Years' Service.

Civil History. — Graduated from Columbia Law School (George Washington University), 1877. — While serving as Chief Signal Officer, department of Cuba, under orders of Commanding General, acted as Secretary of Public Works, January, 1899. — Discovered, in 1906, the electrical properties of carborundum, its sensitiveness to Hertzian waves and procured a patent covering the use of this substance in wireless telegraphy, this being the first crystal receiver discovered. — Commander Spanish War Division Veteran Signal Corps Association, February, 1910.

Vol. VI
p118 [Supplement, Vol. VI: 1910‑1920]

(Henry Harrison Chase Dunwoody, Born Oct. 23, 1842.)

Military History. —

Colonel, Assistant Chief Signal Officer, July 8, 1898.

Brigadier-General, U. S. A., July 6, 1904.

Brigadier-General, U. S. A., Retired, July 7, 1904,
at His Own Request, After Over 40 Years' Service.

Civil History. — Graduate of Columbia Law School (George Washington University), 1877; awarded diploma and medal at World's Columbian Exposition, Chicago, 1903, for "complete and exhaustive summaries and graphic representations of meteorological observations, and for his valuable contribution to human knowledge"; discovered in 1906 the sensitiveness of carborundum to Hertzian waves; secured patent covering its use in wireless telegraphy as detector of such waves, this being the first crystal receiver and rectifier discovered; since retirement, President Aztec Copper Co.; President Dunwoody Automatic Gun and Projectile Co.; Vice-President, American Gun Co.; has secured patents for cooling system for machine guns, for gas‑producing shrapnel and for contour cap for projectiles.

Vol. VII
p82 [Supplement, Vol. VII: 1920‑1930]

Military History. —

Colonel, Assistant Chief Signal Officer, July 8, 1898.

Brigadier-General, U. S. A., July 6, 1904.

Brigadier-General, U. S. A., Retired, July 7, 1904,
at His Own Request, After Over 40 Years' Service.

Civil History. — Graduate of Columbia Law School (George Washington University) 1877; awarded diploma and medal at World's Columbian Exposition, Chicago, 1903, for "complete and exhaustive summaries and graphic representations of meteorological observations, and for his valuable contribution to human knowledge"; discovered in 1906 the sensitiveness of carborundum to Hertzian waves; secured patent covering its use in wireless telegraphy as detector of such waves; this being the first crystal receiver and rectifier discovered; since retirement, President Aztec Copper Co.; President Dunwoody Automatic Gun and Projectile Co.; Vice-President, American Gun Co.; has secured patents for cooling system for machine guns, for gas‑producing shrapnel and for contour cap for projectiles.

Vol. VIII
p40 [Supplement, Vol. VIII: 1930‑1940]

Military History: —

Brig.‑Gen., Ret., July 7, 1904.

Died, Jan. 1, 1933, at Interlaken, N. Y.: Aged 90.

Portrait and obituary in Annual Report, Association of Graduates, for 1933.

Buried, Sheldrake Cemetery, Ovid, NY.