The Theodor Horydczak Collection (about 14,350 photographs online) documents the architecture and social life of the Washington metropolitan area in the 1920s, 1930s, and 1940s, including exteriors and interiors of commercial, residential, and government buildings, as well as street scenes and views of neighborhoods. A number of Washington events and activities, such as the 1932 Bonus Army encampment, the 1933 World Series, and World War II preparedness campaigns, are also depicted. [View a sampling]