ProQuest, part of Cambridge Information Group (www.cambridgeinformationgroup.com), was formed in 2007 through the merger of two leading and historic information technology firms: ProQuest Information and Learning and CSA.

ProQuest provides seamless access to and navigation of more than 125 billion digital pages of the world’s scholarship, delivering it to the desktop and into the workflow of serious researchers in multiple fields, from arts and literature to science, technology and medicine.

ProQuest’s vast content pools are available to researchers through libraries of all types and include the world’s largest digital newspaper archive, periodical databases comprising the output of more than 9,000 titles and spanning more than 500 years, the preeminent dissertation collection and various other scholarly collections. Users access the information through the ProQuest® Web-based online information system, Chadwyck-Healey™ electronic and microform resources, UMI® microform and print reference products, eLibrary®, SIRS®, Ulrich's Serials Analysis System™, COS Scholar Universe, and Serials Solutions e-resource access and management services. Through the expertise of its business units, Serials Solutions and COS, ProQuest provides technological tools that allow researchers and libraries to better manage and use their information resources.

ProQuest’s main offices are in Ann Arbor, MI (www.proquest.com) and Bethesda, MD (www.csa.com).