- Iowa Geological Survey, Vol. XI. Annual report, 1900, with accompanying papers.

1901, 519 pp. 43 fig. 12 plts. 9 fold. & col. geol. maps of counties: Louisa (2x), Marion, Pottawattamie, Cedar (2x), Page, Clay, and O`Brien. Orig. wrappers with libr. stamp, top of spine slightly worn, contents very good.