Encyclopædia Britannica
The "Britannica" is the English-language encyclopaedia/encyclopedia that was in print for the longest time: it lasted 244 years. It was first published between 1768 and 1771 in the Scottish capital of Edinburgh, as three volumes. (This first edition is available in facsimile.) The encyclopaedia grew in size: the second edition was 10 volumes, and by its fourth edition (1801–1810) it had expanded to 20 volumes. Its rising stature as a scholarly work helped recruit eminent contributors, and the 9th (1875–1889) and 11th editions (1911) are landmark encyclopaedias for scholarship and literary style. Beginning with the 11th edition and following its acquisition by an American firm, the "Britannica" shortened and simplified articles to broaden its appeal to the North American market. In 1933, the "Britannica" became the first encyclopaedia to adopt "continuous revision", in which the encyclopaedia is continually reprinted, with every article updated on a schedule. In March 2012, Encyclopædia Britannica, Inc. announced it would no longer publish printed editions, and would focus instead on "Encyclopædia Britannica Online".
Webster's Dictionary
Since the 1961 publication of the "Third", Merriam-Webster has reprinted the main text of the dictionary with only minor corrections. To add new words, they created an "Addenda Section" in 1966, included in the front matter, which was expanded in 1971, 1976, 1981, 1986, 1993, and 2002. However, the rate of additions was much slower than it had been throughout the previous hundred years. Following the purchase of Merriam-Webster by Encyclopædia Britannica, Inc. in 1964, a three-volume version was issued for many years as a supplement to the encyclopedia. At the end of volume three, this edition included the "Britannica World Language Dictionary", 474 pages of translations between English and French, German, Italian, Spanish, Swedish, and Yiddish. A CD-ROM version of the complete text, with thousands of additional new words and definitions from the "addenda", was published by Merriam-Webster in 2000, and is often packaged with the print edition. The third edition was published in 2000 on Merriam-Webster's website as a subscription service.