Sparks Professor emeritus of Slavic and Baltic Linguistics, taught at Penn State from 1964 until his retirement in 2001. From 1969 to 1991 he served as head of the Department of Slavic Languages. His teaching concentrated on Slavic linguistics, Russian, Old Church Slavic as well as courses in Baltic languages and linguistics, primarily Lithuanian. Bill Schmalstieg is the author of numerous books and articles in the fields of Slavic, Baltic and Indo-European linguistics. His historical grammars of Old Church Slavic and Old Russian are widely used in North American universities. He has done path-breaking work on Lithuanian syntax and Baltic verb morphology, and he is also known for his important publications on Old Prussian. After Lithuania regained its independence in 1991, the Lithuanian government officially honored Professor Schmalstieg for his accomplishments in the study of the Lithuanian language.