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  Partner: UNT Libraries
 Decade: 1840-1849
Travels in Egypt, Arabia Petræa, and the Holy Land.
Map of Egypt, Arabia Petraea and Palestine showing Dr. Olin's route. Inset of Sinai with points of interest. digital.library.unt.edu/ark:/67531/metadc29436/
Travels in North America, in the years 1841-2; with geological observations on the United States, Canada, and Nova Scotia. By Charles Lyell.
Geological map of the United States and Canada in 1841 - 42. Colored areas indicate geological eras, mineral and rock formations. digital.library.unt.edu/ark:/67531/metadc29428/