Introduction to the study of the history of language

Introduction to the science of language, Volume 1 (of 2)

Philological Proofs of the Original Unity and Recent Origin of the Human Race

The Philosophic Grammar of American Languages, as Set Forth by Wilhelm von Humboldt With the Translation of an Unpublished Memoir by Him on the American Verb

The Internet and Languages [around the year 2000]

Primitive culture, vol. 1 (of 2)

Chips from a German Workshop, Volume 4 Essays Chiefly on the Science of Language

Opuscula: Essays chiefly Philological and Ethnographical

An essay on the origin of language, based on modern researches, and especially on the works of M. Renan

Chips from a German Workshop, Volume 3 Essays on Literature, Biography, and Antiquities

Duality of Voice