Introduction to the study of the history of language

Language: An Introduction to the Study of Speech

Chips from a German Workshop, Volume 1 Essays on the Science of Religion

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

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

The Internet and Languages [around the year 2000]

Lectures on the Science of Language

Della illustrazione delle lingue antiche e moderne e principalmente dell'italiana procurata nel secolo XVIII. dagli Italiani - Parte II

Opuscula: Essays chiefly Philological and Ethnographical

Duality of Voice

Primitive culture, vol. 2 (of 2)