The Mason Studio Collection contains approximately 20,000 images (negatives, glass negatives, and some prints). The earliest photographs are undated but appear to have been taken before 1920 (possibly in Sea Cliff); the most recent are from the 1970s. Mason’s work documented the lives of many Port Washington residents, local businesses, and many town events. The images include: portraits of individuals and families; weddings (formal and candid shots); graduations; communions; bar mitzvahs; passport photos; interiors and exteriors of houses; buildings, businesses and restaurants; group portraits of members of sports teams, clubs and organizations; individuals in costumes and uniforms; parties; and parades.