Scope and Content From the Collection: The collection consists of Ralph Brown's 1945 compilation of correspondence on passenger pigeons. Brown was a Virginia Tech librarian working under the request of a professor A. L. Dean of the V. P. I. Agricultural extension division. The latter had made inquiries to ornithologists regarding "the possibility that the extermination of the passenger pigeon was caused by disease." All the six ornithologists contacted disagreed with Dean's hypothesis. "Market hunting,"...