This publication grew out of a side-meeting at the 1st World Congress on Alternatives and Animal Use in the Life Sciences: Education, Research and Testing, held in Baltimore, Maryland in November 1993. It was felt there was a need for a directory of resources addressing various aspects of the alternatives issue. Four people volunteered to develop such a resource and in the Spring of 1994 a questionnaire was developed and sent to all interested parties. The Directory grew out of the responses to the questionnaire. It gives information on newsletters, databases, publications and computer models. Each entry comprises the resource developer's name, address, telephone/fax, descriptive information, costs, availability, audience, language and a contact person's name.