Evaluating digital libraries: A longitudinal and multifaceted view

THE PERSEUS DIGITAL LIBRARY (PDL) IS ONE OF THE primary digital resources f or the humanities. Under continuous development since 1987, the project has included an ongoing evaluation component that aims to understand the effec ts of access to digitized source materials in the humanities. A summary of the PDL genesis and current status is given and the multifaceted and longit udinal evaluation effort is described. A brief synthesis of results is prov ided and reflections oil the evaluation along with recommendations for DL e valuation ale given.