Rare earths, primarily light rare earths, either alone or in combination with other rare earths, as in misch metal, alloyed with cobalt or iron, constitute a unique new class of permanent magnet materials with outstanding coercivity and other magnetic properties. These materials represent the first serious alternative to the alnicos and ferrites, discovered earlier. The intensity of interest in this field may be judged by the presence of over 800 publications which have appeared in the 25 years since their discovery and by the fact that the publication rate remains unabated. The present bibliography includes a listing of references by year and indexes based on subject, material and author.