B. Shumard

Report of a geological survey of Wisconsin, Iowa, and Minnesota; and incidentally of a portion of Nebraska Territory. Made under instructions from the United States Treasury department

Joseph Leidy, Joseph Granville. Norwood, David Dale Owen, 2012 .

Report Of A Geological Survey Of Wisconsin, Iowa, And Minnesota...

J. Leidy, J. G. Norwood, D. Owen, 2012 .

On the geology and natural history of the upper Missouri

B. F. Shumard, G. Engelmann, F. Hayden, 1862 .

The primordial zone of Texas with descriptions of new fossils

B. Shumard, 1861, American Journal of Science, and Arts.