Collections

Henry H. "Hap" Arnold

 Aviation and Air Forces Pioneer


General of the Air Force and pioneer airman who was taught to fly by the Wright Brothers, and commander of Army Air Forces in victory over Germany and Japan in World War II. Arnold was born Gladwyne, Pa., June 25, 1886, died Sonoma, Calif., Jan. 15, 1950. "Hap" Arnold, as he was fondly known and called, dating from his early days at West Point, was in the class of 1907 at the U.S. Military Academy.

Arnold initially was assigned to the 29th Infantry, serving with it in the Philippine Islands for two years. He returned home for two-and-a-half-years' duty at Governors Island, N.Y. until April 1911 when he was detailed to the Signal Corps and sent to Dayton, Ohio for instructions in the Wright biplane. The Wright Brothers, who had made their first flight in 1903, personally instructed him for two months, after which he soloed and became one of the earliest military aviators in June 1911.

From then on his life paralleled the growth of America's air power and he personally contributed to most of the major milestones of development during the long period until he retired in 1946. Three years later, by act of Congress, he received permanent five-star rank as general of the Air Force, the first such commission ever granted.

He retired from the service June 30, 1946, after earning most of the honors a nation can give a world military leader of his stature, including three Distinguished Service crosses, the Distinguished Flying Cross, Air Medal and decorations from Morocco, Brazil, Yugoslavia, Peru, France, Mexico and Great Britain.

– Biography from U.S. Air Force Biographical Dictionary
by Flint O. DuPre, Colonel, U.S. Air Force Reserve


The Clark Special Collections has an extraordinary collection that includes over 500 letters between General Hap Arnold, his family, friends, and military peers. Henry H. “Hap” Arnold (1886–1950) was an American aviation pioneer and military leader, holding the 5-star ranks of General of the Army and later General of the Air Force. These letters showcase the major events in General Arnold’s life from his time as a U.S. Military Academy cadet (Class of 1907) to his retirement years. These letters describe serving in the Philippines from 1907-1909, receiving pilot training from Orville Wright, training new pilots in the Army Air Service, being the first pilot to carry air mail, and the first flights from the lower 48 States to Alaska. They highlight significant experiences as General of the Air Force and his work with national defense after his retirement.

In addition to the letters this collection contains numerous photographs, writings, and other artifacts produced by or bestowed on General Arnold. A significant highlight is a draft manuscript of General Arnold’s autobiography, Global Mission, containing numerous corrections and annotations made by General Arnold prior to publication. The materials in the collection demonstrate General Arnold’s roles as a leader, mentor, father, and loving spouse.

Altogether it constitutes a unique resource for any researcher interested in the life of General Arnold, early aviation, and World War II.

This collection has been made possible through the generous donations of Mr. Robert Bruce Arnold, General Arnold’s grandson. The Friends contractors have helped preserve the collection in accordance with Special Collection’s current archival best practices and policies, and developed a digital finding aid searchable by cadets and other researchers.

– Aaron Wilson, Friends 2025 Newsletter


Selections from the Collection


Young Aviator

Lt. Hap Arnold on one of his early flying machines.


Letter from Lt. Arnold to his Father

Letter describing his recent experience flying his machine and his attempt at winning the Mackay Trophy. “On Monday last I flew my machine with Sherman as a passenger from Washington Barracks to College Park...On Wednesday Milling and I went after the Mackay Trophy.”


Letter from Lt. Arnold to his Fiancé

Letter from Lt Hap Arnold to his fiancé describing the Mackay trophy which he won in 1912 for the “Most Meritorious Flight” during a reconnaissance competition flown over Virginia on 9 October 1912. “Today the Mackay Trophy arrived and is now on exhibition.”


Remembering Way Back in the Days When….

Newspaper clipping showing Lt. Arnold and Lt. Milling circa 1911 during their flight training and 19 years later during a reunion flight. Oakland Post-Enquirer, 21 April 1930.


Pioneer Aviators

General Benjamin Foulois and Colonel Hap Arnold at March Field, California, 29 July 1932.


Humorist Meets New Airmail Commander

Newspaper clipping featuring Lt. Colonel Hap Arnold and Will Rogers, 20 February 1934.


Master Map to Guide Airmen on Alaska Flight

Newspaper clipping with Lt. Colonel Hap Arnold and Major Ralph Royce reviewing the master map of their planned route to Alaska, 1 July 1934.


Aviation Licenses

Brig. General Hap Arnold’s flight ratings, dated June 1935.


Letter from Irving Berlin

Letter to Lieut. General Arnold from Irving Berlin, regarding Arnold’s request for Berlin to write a song for the Army Air Forces, dated 27 January 1942.


Twin Generals

General Arnold and Maj. General Twining in front of General Twining’s airplane, April 1945.


Plane Generals

General Arnold and Maj General Twining on board General Twining’s airplane, April 1945.


Island General

General Arnold on Guam, July 1945.


Nazi Stationary

As featured in the Spring 2025 Newsletter, General Arnold wrote this letter to his wife on Nazi stationary in Berlin after VE Day, dated 15 July 1945.


General and Mrs. Arnold