Mary S. Listfeldt, who had a long career as a city and university librarian, died in her sleep Thursday at Carroll Lutheran Village Health Care Center in Westminster. She was 80.
She worked for more than 20 years for the Enoch Pratt Free Library in Baltimore, and another two decades at the University of Maryland, Baltimore County.
Born Mary Shover in Albany, N.Y., she earned a bachelor's degree in 1944 from what is now the State University of New York at Albany and a master's degree in library science from Catholic University in 1972.
She was a yeoman third class in the Navy from 1944 to 1946.
She was married for 54 years to Hans Gunther Listfeldt, who had been her pen pal in childhood. She helped her husband build a vacation cabin in Pennsylvania.
"They were the most loving couple. He would hold her hand. They were there for each other and for all of us," said her longtime friend Sister Marie Bernadette of Westminster.
Mrs. Listfeldt enjoyed gardening and classical music.
A Mass of Christian burial was offered yesterday at St. John Roman Catholic Church in Westminster, where she was a member.
In addition to her husband, a retired University of Maryland librarian, she is survived by a brother, Gus Shover, and sister, Barbara Hillery, both of Albany.