106596. Condra, G. E. and Bengston, N. A.   The Pennsylvanian Formations of Southeastern Nebraska.   Nebraska Academy of Sciences, 1915, NAS Publications, Volume 9, Number 2 : 39 pages with 21 plates.   Softbound, stapled text, good condition.   Original publication, not a modern reprint.   $10.00

40004. Tanner, L. G. and Martin, L. D.   Notes of the deciduous and permanent dentition of the hyracodonts.   Nebraska Academy of Sciences, 1972, Transactions of the Nebraska Academy of Sciences, 1 : 12 pages.   Reprint, stapled text, very good condition.    $3.00

86202. Caldwell, W. W. et al.   Man and the Changing Environments in the Great Plains.   Nebraska Academy of Sciences, 1983, Special Issue, Volume 11 : 144 pages with illustrations.   Softbound, some cover staining, text in very good condition.    $26.00