Translation of the whole poem in blank verse by Courtney Langdon (Rome 1861 – Providence, RI, 1924), American linguist and translator, professor of modern languages at Cornell and Brown universities.
First edition of Hell published al Cambridge in 1918 (Purgatory and Paradise published respectively in 1920 and 1921).
The complete English translation of the Divine Comedy by Courtney Langdon is  accessible online.

Frontespizio dell’Inferno
Incipit dell’Inferno