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Observations on some Wyoming birds
Cost of bass fishing at Ridge Lake, Coles County, Illinois
The ornithology of Illinois. Part I. Descriptive catalogue
The use of factor analysis in modeling natural communities of plants and animals
First report : accompanied with Notes on the birds of Minnesota, by P. L. Hatch
Parasaurolophus cyrtocristatus, a crested hadrosaurian dinosaur from New Mexico
Morgan expeditions, 1870-'71 ... : on the Devonian trilobites and mollusks of Ereré, province of Pará, Brazil
Index-catalogue of the birds in the Hancock collection
Dutch elm disease in Illinois
Free public education in nature and art, combined in original Central Park and museum plans, 1857-1871, of Andrew H. Green, Frederick Law Olmsted, Ca…