encyclopaedia: The 20th century and beyond. The Encyclopedia Americana, which traced its ancestry to an English-language adaptation (–33) of the seventh edition of Brockhaus, took on new strength in when the editor of Scientific American, Frederick C. Beach, was appointed editor of the Americana. The Encyclopedia Americana Edition contains: More than 45, articles written by experts in easy-to-understand language; The latest demographic information on nations, their capitals, and most populous cities; Coverage of national and international events reflects the . The original Encyclopædia Americana was published in the United States beginning in the late s and continued with new editions and supplements into the s. Other than the name, it had no connection with the Encyclopedia Americana that began publishing in or the Americanized version of the Encyclopædia Britannica published in the s.. The Encyclopædia Americana.