Description of the fossils and shells collected in California by William P. Blake, geologist of the United States Pacific Railroad Survey in California, under the command of Lieut. R.S. Williamson, in 1853-54

Cover-title. -- Running title: H. doc. 129. -- Half-title: Explorations and surveys for a railroad route from the Mississippi River to the Pacific Ocean.--War Department. Appendix to the preliminary geological report of William P. Blake ... Palaeontology.