Geology of the Aspen district, Col., 1898. 



Marquette Iron-bearing district of Michigan, 1896. 



Hayden's Geological Survey of the Territories. 



Annual Reports. 1st (1867) to 12th (1878), except 4, 5, 8, 9. 

 Preliminary Reports, Wyoming, 1870; Montana and adjacent territories, 1871. 

 Preliminary Field Report, Colorado and New Mexico, 1869. 

 Miscellaneous publication, Nos. 10 and 12. 



Owen's Report of Geological Survey of Wisconsin, Iowa, and Minnesota and a portion of 

 Nebraska. 



1 volume of text and 1 volume of plates, Philadelphia, 1852. 



King's United States Geological Exploration of the 40th parallel. 

 Vols. 1 to 7 and Atlas, Washington, 1870-80. 



Powell's Report on Geology of Eastern portion of Uinta Mts., Washington, 1876. 



Wheeler's Report (Annual), Geological Survey . . . West of the 100th meridian. 

 1 vol. and Atlas, Washington, 1878. 



Reports, Explorations and Surveys Mississippi River to the Pacific Ocean. 

 Vols. 1 (1855) to 12 (186'0), Washington. 



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