William Brewster correspondence. Letters from Henry Wetherbee Henshaw, 1869-1919 and undated. Henshaw, Henry W. (Henry Wetherbee), 1850-1930. Brewster, William, 1851-1919. collectionmanuscriptmixed material Correspondence. eng Includes 367 manuscript letters from H. W. Henshaw to W. Brewster. William Brewster Papers, Ernst Mayr Library, Museum of Comparative Zoology, Harvard University. Henshaw, Henry W. (Henry Wetherbee), 1850-1930 -- Correspondence. Brewster, William, 1851-1919 -- Correspondence. Ornithology.