H.D. International Society
This is the official website of the international scholarly society dedicated to modernist writer H.D.
Hilda Doolittle: American Poet
https://www.britannica.com/biography/Hilda-Doolittle
Britannica's encyclopedia entry on H.D.
H.D. Biography from The Poetry Foundation
https://www.poetryfoundation.org/poets/h-d
A highly detailed and useful page on H.D.'s life and work.
