Collection
- Weld-Grimké family papers, 1740-1930 (majority within 1825-1899)133
- Western America collection, 1797-ca. 1898106
- Weston Family World War II Photograph Albums, 1919-19487
- Wilbur Wright Airfield Photograph Album, ca. 1917-19182
- Willard Cundiff Scrapbook, ca. 1905-19082
- Willard Parker papers, 1841-1877 (majority within 1861-1869)2
- William A. Lewis photograph collection, ca. 1850s-1980s14
- William B. Sprague and Joseph H. Hedges collection, 1840-19097
- William Bosson family scrapbook and genealogical papers, 1789-2000 (majority within 1789-1899)233
- William Caldwell diary, 1849-18502
- William E. Coffman papers, 1875, 1882-1891 (majority within 1885-1891)11
- William Gibbons papers, 1804-1857 (majority within 1828-1845)14
- William H. Shaw papers, 1861-18652
- William H. Whiton sketchbook, 1859-18602
- William Henry Lyttelton papers, 1730-1806 1755-176128
- William Jenks collection, 1794-1884 (majority within 1794-1868)95
- William Lee papers, 1862-1955 (majority within 1862-1911)10
- William Mildmay papers, 1748-17569
- William Petty, 1st Marquis of Lansdowne, 2nd Earl of Shelburne papers, 1665-1885259
- William Pote family papers, 1769-1997 (majority within 1788-1900)18