Encyclopædia Americana (19th century)
The Encyclopædia Americana was a general-knowledge English-language encyclopedia. It was published in the United States beginning in the late 1820s and continued with new editions and supplements into the 1850s. Other than its name, it had no connection with the more well-known Encyclopedia Americana, which was first published in 1902.
The Americana was the first full-sized encyclopedia of American authorship.