Lehigh also has many different digitized collections of historical materials, both in terms of  early and/or rare books and of book-length materials related to Lehigh and local history. Below is a list of some of these collections.

• Early American Imprints, 1636-1800 - Provides access to primary sources covering nearly ever aspect of early American history, literature, philosophy, religion, politics, and every day life. Coverage from 1639 to 1800. 
• Early American Imprints, 1801-1819 - Features books, pamphlets, broadsides, state papers and other government materials, presidential letters and messages, and congressional, state and territorial resolutions.
• Beyond Steel: An Archive of Lehigh Valley Industry and Culture - Highlights the Lehigh Valley's mid nineteenth-century book through late twentieth-century decline and the continuing community readjustment, and includes letters, maps, and oral histories in addition to books. 
• The Problem of the Planets - Includes a digital collection of early astronomy books, such as On the Revolutions of the Heavenly Spheres by Copernicus and Instruments for the Restoration of Astronomy by Tycho Brahe.
• Books from The Vault at Pfaffs - Brings together art and literature from the United States' first self-described bohemians, including a digital third edition of Walt Whitman's Leaves of Grass.