Though Hagedorn met
Theodore Roosevelt in 1912, he visited
Sagamore Hill in 1916 and became a friend. In 1917 Roosevelt proposed that Hagedorn write a biography of Roosevelt, an effort which became The Boys' Life of Theodore Roosevelt, the first of many biographies that Hagedorn wrote. Drawing upon his friendship with Roosevelt, Hagedorn was able to elicit the support of Roosevelt's friends and associates' personal recollections in this book, first published in 1918 and then updated in 1922.[3]
In addition to Hagedorn's works on Roosevelt and the Roosevelt family, Hagedorn also authored books of poetry and many biographies throughout his long career, including works about
Leonard Wood,
Edwin Arlington Robinson, and
Albert Schweitzer.[1] He also served as the Director of the
Theodore Roosevelt Association from 1919 until 1957, becoming Director Emeritus until his death in 1964.[3]
Selected works
A troop of the Guard (1909)
Poems and Ballads (1912)
"The Boys' Life of Theodore Roosevelt" (1918)
"Roosevelt in the Bad Lands" (1921)
The Book of Courage (1929)
Leonard Wood, A Biography (Volumes 1 & 2 - 1931)
Edward Arlington Robinson, a Biography (1938)
Sunward I've Climbed—The Story of John Magee, Poet and Soldier. Macmillan. 1942.
ASINB0007E0BQC.
Prophet in the Wilderness: The Story of Albert Schweitzer (1947)