U Bookmark Collection Context Mattatuck Museum Waterbury Manufacturing and Business Collection, bulk circa 1770-1984 and undated; bulk 1824-1890
Underground Marble Quarry, West Rutland, Vt. Steam Drills in operation, 1905 Box 1, Object 12 Bookmark Collection Context Mattatuck Museum Stereograph Collection, 1895-1905
"Under Two Flags," poster, 1936 Box 9 Bookmark Collection Context Mattatuck Museum Connecticut Women's Hall of Fame Rosalind Russell Ephemera Collection, 1929-1989…
"Under Two Flags," poster, 1936 Box 8, Folder 1 Bookmark Collection Context Mattatuck Museum Connecticut Women's Hall of Fame Rosalind Russell Ephemera Collection, 1929-1989…
"Under Two Flags," poster (small), 1936 Box 9 Bookmark Collection Context Mattatuck Museum Connecticut Women's Hall of Fame Rosalind Russell Ephemera Collection, 1929-1989…
Unidentified Account Book (General Store?), 1787-93 Object 5 Bookmark Collection Context Mattatuck Museum Waterbury Manufacturing and Business Collection, bulk circa 1770-1984 and undated; bulk 1824-1890…
Unidentified Day book of shoemaker-leather worker, c. 1810-13 Object 6 Bookmark Collection Context Mattatuck Museum Waterbury Manufacturing and Business Collection, bulk circa 1770-1984 and undated; bulk 1824-1890…
Unidentified family correspondence, undated Box 5, Folder 15 Bookmark Collection Context Mattatuck Museum Camp Family Papers, 1847-1991 and undated…
Unidentified House Box 1 Bookmark Collection Context Mattatuck Museum Stereograph Collection, 1895-1905
Union campaign materials and newspaper clippings, 1952-1953 Box 5, Folder 1 Bookmark Collection Context Mattatuck Museum Brass Worker's History Project Collection, 1919-1983, circa 1995, and undated…