William Dwight Whitney and the Science of Language.
Atharva-Veda Sansamhita Vol.1, 2
THE CENTURY DICTIONARY: An Encyclopedic Lexicon of the English Language ( in 5 Volumes Complete + Vol. VI; Cyclopedia of Names )
A Comparative Germanic Grammar. [William Dwight Whitney Linguistic Series]
Sanskrit Grammar. Including both the Classical Language,and the older Dialects,of Veda and Brahmana.
A Comparative Germanic Grammar:William Dwight Whitney Linguistic Series