: The encyclopedia was spearheaded by Francis Lieber , who adapted and expanded material from the German Brockhaus Conversations-Lexikon to create a reference work specifically for American needs.
: The set includes over 1,200 maps , 1,000 tables, and roughly 4,500 images (black-and-white line art and color). The Encyclopedia Americana
: To help users find information, it includes roughly 150,000 cross-references and over 9,000 bibliographies for further research. Historical Development : The encyclopedia was spearheaded by Francis Lieber