They offer a variety of means of delivery. All US customers must pay the publication-specific copyright fee on all documents, whatever the method of delivery. This list of links to commerical document delivery services was created by the Walter E Helmke Library at the Indiana University and Purdue University campus in Fort Wayne. This list gives brief descriptions of its links. DocDel Instant Information Systems created and maintains Docdel as a site for document for both suppliers and users.
Site includes links to commercial suppliers and links by subject.
It also has a set of links to relevant copyright sites. This list of commercial document delivery services was compiled by Jean Shipman at the University of Washington. This site intends to be a clearinghouse of information on document delivery services. It provides very detailed descriptions of document delivery suppliers. Descriptions are arranged in General, Subject, and Publisher categories.