The Allentown Art Museum of the Lehigh Valley is an art museum located in Allentown, Pennsylvania. It was founded in 1934 by a group organized by Walter Emerson Baum, a Pennsylvania impressionist painter. The museum maintains a collection of over 20,000 works of art and is a major regional art institution. The museum also maintains a library and archives containing over 16,000 titles and 40 current periodicals.