Stout, T. M. and others, 1971. Guidebook to the Late Pliocene and Early Pleistocene of Nebraska (GB-7): 109 pp., size 8.5" x 11". Description: This tour started at Sidney and ended at Lincoln. It gave an opportunity for field consideration of some of the problems of Pliocene and Pleistocene stratigraphy in that interesting part of the Central Great Plains. Out of print, unbound copy available.