In 1968, the Del Deos were founders of the Fine Arts Work Center in Provincetown. Josephine Del Deo was part of the efforts to create the Provincetown Heritage Museum in 1976, the Provincetown National Register District in 1989, and the Dune Shacks of Peaked Hill Bars Historic District in 2012. She was president of the Provincetown Symphony Orchestra, founded the local chapter of the ACLU, and raised funds for civil rights and anti-nuclear causes.
