The world's most valuable and comprehensive scholarly, multi-disciplinary full-text database, with more than 8,500 full-text periodicals, including more than 7,300 peer-reviewed journals. In addition to full text, this database offers indexing and abstracts for more than 12,500 journals and a total of more than 13,200 publications including monographs, reports, conference proceedings, etc. The database features PDF content going back as far as 1887, with the majority of full text titles in native (searchable) PDF format. Searchable cited references are provided for more than 1,400 journals.

AgEcon Search is a free, open access repository of full-text scholarly literature in agricultural and applied economics, including: Working papers; Conference papers; and Journal articles

• Early American Imprints, Series I: Supplement from the Library Company of Philadelphia, 1670-1800;
• Early American Imprints, Series II: Shaw-Shoemaker, 1801-1819;
• Early American Imprints, Series II: Supplement from the Library Company of Philadelphia, 1801-1819

A collection of digitized sources from the the Everett D. Graff Collection of Western Americana at the Newberry Library, Chicago.  This database contains a mixture of original manuscripts, maps, ephemeral material and rare printed sources:

• Papers of early pioneers, explorers and hunters are well represented, including items such as the original manuscript journal and papers of James Audubon.
   
• The evolution of Western towns can be seen through materials such as prospectuses and city directories.

• The growth of railway and road networks can be explored through maps and through records of key railroad companies.

• Emigrants guides, manuscript travel journals, store catalogues, illustrations and maps enable scholars to understand the phenomenon of Westward expansion.

• Accounts of ranches and of the prairie lands document the agricultural transformation of the West.