Irene quoted wikipedia in her blog post on J. B. Bury as saying that J. B. Bury wrote articles for the 1911 Encyclopedia Britannica.
According to the list of contributors from the wikisource article on the 1911 Encyclopaedia Britannica (scroll down for the link to the list of contributors -- it seems to be impossible to link to it directly), Bury contributed the following articles (all linked to the 'Love To Know' version -- note that many articles have scanning errors, but they're not as bad as they used to be):
Alexius I
Alexius II
Alexius III
Baldwin I
Baldwin II
Basil I
Basil II
Belisarius
Edward Gibbon
The Later Roman Empire
