The objective of the Hartlib Project is to "create a complete electronic edition with full-text transcription and facsimile images of all 25,000 seventeenth-century manuscripts" belonging to the great seventeenth-century 'intelligencer' and man of science, Samuel Hartlib. The first two editions of this project - published in 1996 and 2002 respectively - were made available on CD-ROM. This third, online edition "provides free access to all the content available on the original CD-ROM versions" and will be expanded to feature full introductory and contextual information. The database is browsable and searchable. Each entry is carefully transcribed and accompanied with page facsimiles.