Routledge, a division of Taylor and Francis, will publish an Encyclopedia of 20th-Century Technology, edited by Colin Hempstead. 400 entries, mostly on individual objects, artefacts, techniques, and products, will provide a technical description, within a brief historical narrative, of about 1000 words plus illustrations and further reading.

Following initial invitation rounds, most entries havebeen assigned. Contributors are sought for the remaining entries, listed at http://www.fitzroydearborn.com/london/tech/unass.htm.

Historians of science and technology are invited to contact the publishers with offers to write entries. Offers should be sent to the email below, giving academic position, research, publications.

For their first 1000 words commissioned, contributors will receive a copy of the Encyclopedia on publication. Contributors will also be paid, on publication, for any further entries written.

Full information about the Encyclopedia can be found at the website below.