Corwin has said she spent 36 years working in the private sector, beginning her business career at age eight by delivering phone books for The Talking Phone Book, the family business that had been founded by her father, Wilbur Lewis, a former salesman. During her teen years, she
proof-read the company's publications, and while in college, she was vice president of
marketing. Corwin has stressed she did not grow up wealthy, noting that in the 1980s, her family almost lost their home. She began college at the private
Ithaca College and had to transfer to the
State University of New York at Albany because of cost concerns. She earned a
B.A. degree in psychology from SUNY in 1985, and then attended
Pace University earning an
M.B.A. in
finance in 1990. She worked on
Wall Street from 1987 to 1990 as a research director for Henry Ansbacher, Inc., a British financial firm that helped large media conglomerates acquire small, locally owned newspapers. She also served on the
board of directors of the Talking Phone Book as Secretary-Treasurer beginning in 1987, making strategic decisions for the company. After completing her education in 1990, she returned to Western New York State to marry Philip M. Corwin II whom she had met in graduate school. The couple worked at The Talking Phone Book with Philip serving as chief financial officer. She also began a family, and has said of this time, "I didn't go into the office every day ... We had more board discussions over the kitchen table than the board room." The business was sold to
Hearst Corporation in 2004 for $400 million, making Corwin and her siblings wealthy, according to the
Buffalo News. Campaign disclosure forms have indicated Corwin's personal assets is between $58 and $158 million, mainly derived from her family's business. ==Community activities==