[en] [Gutenberg 64485] • The Origin of the Mound Builders Wentworth Press
[en] [Gutenberg 48469] • The Indian Fairy Book / From the Original Legends Wildside Press
[en] [Gutenberg 55434] • Early Man in the New World Doubleday & Company
[en] [Gutenberg 26382] • Ancient America, in Notes on American Archaeology Createspace Independent Publishing Platform