arXiv.org (Open access to 434,709 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology and Statistics - Cornell University)

California Institute of Technology (Caltech)

Central Connecticut State University Digital Archive

Digital Commons@UCONN

DSpace at MIT

Gutenberg-e (digital monographs in historical scholarship)

Networked Digital Library of Theses and Dissertations (NDLTD)

Networked Infrastructure for Nineteenth-century Electronic Scholarship (NINES)

OhioLink

Virginia Polytechnic Institute and State University

Worcester Polytechnic Institute (WPI)

Yale Medicine Thesis Digital Library Project