University of Michigan - Bentley Historical Library
Papers relating to collaboration (IMB) between the University of Michigan, the University of California-Irvine, and the Brookhaven National Laboratory to conduct underground experiments to detect proton decay and to find experimental proof of a "grand unified theory" of physics
University of Michigan - Bentley Historical Library
Photo of van der Velde standing atop IMB pool; color slides of equipment, facilities, and results of experiments on proton decay
University of Michigan - Bentley Historical Library
Photo of van der Velde standing atop IMB pool; color slides of equipment, facilities, and results of experiments on proton decay
New York State Historical Documents
Letters received, genealogy notes and charts, and narrative family histories concerning the Van der Burgh, Platt, Carman, Adriance, Scudder, Borden, Van Wyck, Sutherland, Ruthven, and Wodell families
American Philosophical Society
This collection contains diaries, letters, accounts, bills and receipts, deeds, and photographs. The collection as a whole is deepest for the period 1770-1970 -- Items of particular note include accounts of household expenses at Wyck from ca. 1790-1970; papers pertaining to the Academy of Natural Sciences of Philadelphia, Quaker schools, and social reform groups; agricultural and horticultural practices; and correspondence to and from cultural leaders of 18th and 19th century Philadelphia
Pennsylvania State University Libraries
Syracuse University - Special Collections Research Center and University Archives
Papers of the American poet, novelist, biographer. Correspondence (1905-1962), with George Pierce Baker, Lucien Price, Alice Ehlers, Albert Schweitzer, Van Wyck Brooks, Reinhold Niebuhr, Jack London, and others; research files on subjects of his biographies: Edwin Arlington Robinson, Theodore Roosevelt, and Schweitzer; manuscripts of writings (1904-1958); and memorabilia (1907-1962), including clippings and photographs.
Harvard University - Widener Library
Box 1: Odeser tentser, by Isidore Lash
State Library of Western Australia
Mount Vesuvius, Italy
San Francisco Public Library
In 1941 Van Wyck compiled this album of his photographs taken in 1908 and presented it to the San Francisco Public Library. All the photographs are captioned. A photo of Van Wyck is on the introductory page