This review is concerned mainly with papers on new technological developments in document supply. It begins with a paper that looks at the likely effects of new technology on libraries and publishing. The Hermes and Apollo projects, and a broad systems view on new technology and the supply of ‘separates’ are discussed. Three discussion papers from the Library of Congress Network Advisory Committee on present position and long‐term future of document delivery in the USA are considered. Finally, two specific developments — the Chemical Abstracts Service Document Delivery Service and the OCLC/IAC electronic document delivery system — are reported.