Elizabeth S. Hirschfelder was one of the earliest recipients of a PhD in
Mathematics granted by the University of Wisconsin. Her PhD class in 1930
consisted of three people and they were the 18th, 19th, and 20th Wisconsin
Mathematics PhDs. At the Wisconsin Mathematics PhD Centennial Celebration
held in 1997, Dr. Hirschfelder was the earliest Wisconsin Mathematics PhD
present; at that time, she held her PhD for 67 years. Dr. Hirschfelder
taught mathematics at the University of Wisconsin for almost 20 years and
was the co-author of the important textbook "Higher Mathematics for
Engineers and Physicists" published in 1934. In 1997 she endowed the
Elizabeth S. Hirschfelder Fund for Graduate Women in Mathematics,
Chemistry, and Physics at the UW-Foundation. She died in 2002 at the age
of 100.