tradesman; amateur paleontologist mineralogist; 1852-5 Prof James Hall's assistant Albany, NY
United States of America
James Hall (1811-1898): Paleont NY (1804-61) & Geol NY (1843) ; J. S. Newberry: Exploring Exped. (1859) ; William More Gabb (1839-1878): Palaeont California (1864-9) & Invertebr Cret. Tert. Fossils Upper Missouri (1876) ; Geol Surv Illinois (1866-75) ; Geol Surv Ohio 1873 & Iowa 1858 ;
Megatherium Club of Smithsonian Institution. United States Geological and Geographical Survey of the Territories in Iowa, Wisconsin & Minnesota
artist G. B. Simpson ; P. Roetter ; J. S. Newberry ; C. K. Worthen ; L. Lesquereux ; O. St John ; E. O. Ulrich ; A. J. Ibbotson ; A. Schönborn ; M. Springer ; engraver J. E. Gavit ; J. Puthie ; J. Murray ; lithographer F. J. Swinton ; C. Schuchert ; cartographer J. N. Macomb ;