abstract:Early American Imprints is a microopaque card (not the more common microfiche) collection produced by Readex Microprint. It is based on Evan's American Bibliography and on Shaw-Shoemaker's American Bibliography and contains the full text of all known existing books, pamphlets, and broadsides printed in the United States (or British American colonies prior to Independence) from 1639 through 1819, some 72,000 titles.