Baum's Complete Stamp Dealers Directory is an invaluable historical reference for philatelists and collectors, first published in 1874. This comprehensive directory offers a meticulously compiled list of stamp dealers across the United States, providing names, addresses, and pertinent details for enthusiasts seeking to expand their collections or connect with reputable dealers. In addition to its extensive coverage of American dealers, the directory includes a curated selection of principal stamp dealers from Europe, reflecting the global nature of philately even in the 19th century. The book also features a detailed list of philatelic publications, offering readers guidance on the best periodicals, journals, and reference works available at the time. Baum's Directory serves not only as a practical guide for collectors and dealers but also as a fascinating snapshot of the early stamp collecting community, its networks, and its resources. With its thorough listings and historical context, this directory remains a valuable resource for researchers, historians, and anyone interested in the origins and development of stamp collecting.