Jan Evertsen van Doorn was a bookseller and publisher active in Utrecht from about 1610 until his retirement in 1644. In addition to books, he also stocked music editions in a variety of genres, and in 1639 he published a Catalogus Librorum Musicorum listing all the music he had for sale. Though its existence was known through literary sources, Doorn's catalog was long thought to be lost. A copy survives in Paris at the Bibliotheque nationale, however, and is reproduced here in facsimile. In addition to this facsimile, the present volume includes a transcription of the original text with bibliographical annotations inserted. Three excellent indexes, "Composers and Editors," "Printers and Publishers," and "Lost Editions," provide easy and useful access to both the facsimile catalog and its transcription. The publication is graced with an introductory essay by Henri Vanhulst that places both the catalog and its contents in perspective within the musical milieu of their day. The essay codifies the careful and thorough study Vanhulst has obviously devoted to this document. Chief among the essay's most helpful features are six statistical tables that provide information on various aspects of the catalog, including chronologies of domestic and foreign editions, percentages of composers by nationality, and geographical distribution of printers and publishers. New.