H. H. Rogers as Jekyll & Hyde — Illustrations from The World, 1906.
Mark Twain and Henry Huttleston Rogers - by Earl J. Dias
H. H. Rogers - An article by by Elbert Hubbard
Henry Huttleston Rogers (1840 – 1909) — An evaluation on the 150th Anniversary of his Birth by Earl J. Dias
Frenzied Finance by Thomas LawsonFrom Dictionary of American Biography: