The Encyclopedia Americana -

: Articles are written by approximately 6,500 contributors , many of whom are leading scholars in their respective fields.

: While it began as a 13-volume set, later editions (such as the International Edition) expanded to 30 volumes to reflect a more global perspective. The Encyclopedia Americana

: It contains over 45,000 articles , ranging in length from 500 words to massive entries like the "United States" article, which exceeds 300,000 words. : Articles are written by approximately 6,500 contributors