To commemorate the 6th year of producing 19th Century Masterfile, Paratext is very pleased to announce the recent inclusion of the Catalogue of Scientific Papers, 1800-1900, Royal Society (Great Britain).

The first installment–3 subject indexes to Mathematics, Mechanics and Physics–are now online for searching. The additional 19-volume author/title catalogs will come online over the next 2 months. Over 750,000 citations covering 1,555 periodicals comprise the full scope of the index now coming online.

If your library currently subscribes to 19th Century Masterfile, please go to to begin searching immediately.

For further information please see