The Perseus Project is an evolving digital library of resources for the study of the ancient world and beyond. Collaborators initially formed the project to construct a large, heterogeneous collection of materials, textual and visual, on the Archaic and Classical Greek world. Planning for Perseus began in 1985; the project was formally established in July, 1987. Since then, the Perseus Project has published two CD-ROMs and created the on-line Perseus Digital Library. Recent expansion into Latin texts and tools and Renaissance materials has served to add more coverage within Perseus and has prompted the project to explore new ways of presenting complex resources for electronic publication. [...] Our goal is to bring a wide range of source materials to as large an audience as possible.