Morris Halle
Associated with MIT and a contemporary of Noam Chomsky, Morris Halle is most famous for early work in generative phonology. His Sound Pattern of Russian (1956) was one of the first works to use distinctive features instead of full-fledged phonemes to analyze the phonology of a language. Halle co-authored the seminal work on generative phonology, The Sound Pattern of English (1969), with Noam Chomsky.
Halle has continued to publish and is even writing on Distributed Morphology, a developing framework that does away with the lexicon and unifies the computational component of the syntax and morphology.