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  1. By: Gray, Asa, - Wilcox, Thomas Erastus, - Williams, S. Wells (Samuel Wells), - Williamson, William Crawford, - Winsor, Justin, - Winthrop, Robert C. (Robert Charles), - Woolson, George C., - Wright, Albert A. (Albert Allen), - Wright, G. Frederick (George Frederick), - Wright, Samuel Hart, - Wright, William Greenwood, - Wiley & Putnam,
    Publication info: [1833-1900]
    Holding Institution: Harvard University Botany Libraries
  2. By: Williams, S. Wells (Samuel Wells),
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: John Torrey Papers | New York Botanical Garden
  1. By: Williams, S. Wells (Samuel Wells),
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1842-1891
    Publication info: [1842-1891]