461. Young man with pointer at blackboard Format: Photographs Collection: Watertown Schools Date: [ca. 1920–1949] Institution: Watertown Free Public Library
462. Young woman in chemistry lab Format: Photographs Collection: Watertown Schools Date: 1929 Institution: Watertown Free Public Library
463. Zoning map of Watertown Creator: Allen, Otis D. Format: Maps/Atlases Collection: Watertown Maps Date: 1935 Institution: Watertown Free Public Library
464. Zoning map of Watertown Creator: Allen, Otis D. Format: Maps/Atlases Collection: Watertown Maps Date: 1948 Institution: Watertown Free Public Library
465. Zoning map of Watertown, compiled from former surveys Creator: Allen, Otis D.; Johnson, Eric L. Format: Maps/Atlases Collection: Watertown Maps Date: 1931 Institution: Watertown Free Public Library