Wanda S. Schmidt, 63, a former social worker teacher, consultant and reference librarian, died of cancer March 24 at a hospital in Venice, Fla. She lived in Nokomis, Fla.

Mrs. Schmidt, who was born in Detroit, lived and worked in the Washington area from the late 1940's, when her husband, Adam M. Schmidt, went to work for the Library of Congress, until 1977, when they moved from Lorton to Nokomis.

She graduated from the University of Detroit in 1948 and lived briefly in New York City and Paris before moving here.

From 1951 to 1959, Mrs. Schmidt was a research analyst and reference librarian for the Library of Congress. During this time, she also was a caseworker on adoption and child welfare cases for the Prince George's County Welfare Board. Earlier, she had worked on adoptions in Silver Spring. In the early 1960s, she worked at the Christ Child children's institution here.

After earning a master's degree in sociology from Catholic University in 1963, she worked for Fairfax County as a senior probation counselor in the Juvenile and Domestic Relations Court and as a counselor for the Fairfax public schools' Department of Vocational Rehabilitation. In 1969, she became self-employed as a consultant and lecturer on child abuse and neglect until retiring in 1977.

Besides her husband, survivors include a stepmother-a brother, Mitchel Ogorek, and two half-sisters, all in Poland, and a sister, Cecilia Deren, and a brother, Stephen Ogorek, both in Warren, Mich.