Historical & Comparative

A Concise Introduction to Syntactic Theory

American Languages, and Why We Should Study Them

A Gothic Grammar, with selections for reading and a glossary

Palæography

The International Auxiliary Language Esperanto: Grammar & Commentary

On the Evolution of Language

Vocabulum; or The Rogue's Lexicon

A Philosophicall Essay for the Reunion of the Languages

A Minniature ov Inglish Orthoggraphy

A Dictionary of the First or Oldest Words in the English Language

Account of the Romansh Language

A Few Practical Suggestions

Pennsylvania Dutch: A Dialect of South German With an Infusion of English

English Past and Present

The Philosophic Grammar of American Languages, as Set Forth by Wilhelm von Humboldt

The Verbalist

The Frontiers of Language and Nationality in Europe

Proverbs and Their Lessons

Abbreviations and Signs

On the Study of Words