WSFA with an offer to donate a collection of Pre-Raphaelite works, along with 11 acres of land to house a museum for the collection. Bancroft acquired the collection beginning in the 1890s and it is the "largest and most important collection of British Pre-Raphaelite art and manuscript materials in the United States." Despite the hardships of the Great Depression, the WSFA raised $350,000 for the new building which opened in 1938. At the same time, the name was changed to Delaware Art Center. Expansion The WSFA moved into the Delaware Art Center in June 1938, with the Wilmington Academy of Fine Arts running educational programs on the ground floor. The onset of World War II resulted in strict gas rationing, which drastically reduced the attendance to the museum. The Wilmington Academy of Fine Arts disbanded in 1943 and turned its assets over to the Delaware Art Center, forming the basis of its education department, which grew to more than 500 students by 1954. The rapid growth of educational programs after World War II required the Delaware Art Center to expand by 1956. Studios and training facilities were included in the expansion, thanks to a $300,000 donation by H. Fletcher Brown. A further renovation was completed in 1970, adding air conditioning and humidity control to the building. In 1972, the Delaware Art Center was awarded accreditation by the American Alliance of Museums. Shortly thereafter, the Delaware Art Center was renamed the Delaware Art Museum to "reflect the growing strength of its collections, programs, and constituency." A further expansion was completed in 1987 which effectively doubled the size of the museum. However, the rapid growth of attendance, programming, and outreach required a further expansion in 2005. During the expansion, the museum hosted programming at what is now the Chase Center on the Riverfront. Collections The Delaware Art Museum's collections are predominantly drawn from late 19th- and early 20th-century American illustration, as well as works from the Pre-Raphaelite Brotherhood. The basis of the museum's collections are the works of Howard Pyle and his pupils N.C. Wyeth, Frank Schoonover, and Stanley Arthurs. Helen Farr Sloan was the wife of artist John French Sloan, and she began donations in 1961 that eventually totalled 5,000 objects. Since the 1970s, the museum has added works by modern artists such as Jacob Lawrence, Louise Nevelson, Robert Motherwell, George Segal, and Jim Dine. The permanent collections at the museum