He was elected to Congress in 1947 to fill the vacancy caused by the resignation of Leo F. Rayfiel and served from November 4, 1947 until his resignation on December 31, 1967.
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Aaron Twerski is the younger brother of Rabbi Abraham J. Twerski (1930–), a noted psychiatrist and author of some 50 books on Judaism and self-image.
He was an unsuccessful candidate for reelection in 1880 to the Forty-Seventh Congress.
He has written over sixty books on Judaism and self-help topics, including several books with Charles M. Schulz's Peanuts comic strips used to illustrate human interaction and behavior.
Within a few years Williams was on the move again, this time to Columbia, Missouri where he established one of the first dry goods stores in the town, also providing services as a boot and shoe maker.
He has compared his work to that of Abraham J. Twerski, another Hasidic rabbi who has written extensively on addiction and who is also a Milwaukee transplant to Pittsburgh.