"The aim of the bibliography is to guide those interested in Anglo-Saxon studies towards the books which should inform and entertain them. It is dedicated to those who have an interest in the subject but who do not know precise bibliographic details to quote to their librarian or bookseller. It is also intended to help those who may be expert in one aspect of Anglo-Saxon studies, for example, the literature, and who have become curious about other aspects, such as the archaeological evidence." Sections include Old English Language, Old English Literature, Ecclesiatical Texts, Illumination, History, Numismatics and more. A bit outdated now as it seems the last update was from 1999.

Separate extensive bibliographies for primary and secondardy sources. Links to on-line materials from within bibliographies.
"These bibliographies are intended to embrace all fields relevant to Lollard studies, broadly defined. We seek to include texts relevant to the literary, historical, cultural, and religious milieu of Lollardy as well as those specifically by and about Lollard writers."

"The bibliography deals with the history and culture of the Khazar kingdom, which was an early medieval state in the eastern steppes of Europe. It is comprised of 14 sections, covering every topic relevant to Khazar studies, including linguistics, government, coinage, agriculture, religion, warfare, and fortresses."

A large bibliography of primary and secondary sources for medieval medicine.

Not a particularly long list of items but they seem to cover the highlights.

"The International Medieval Bibliography (IMB) is the world's leading bibliography of Medieval Studies, an essential tool for research and teaching on the European Middle Ages."

"This is a bibliography of works on Norman history. Between the Viking settlement of c. 900 and the turnover of Normandy by Geoffrey le Bel to Henry II in 1150, it is as complete as I could make it... During the Anglo-Norman period, I have concentrated on Normandy, not England... English and French are heavily represented, with a smattering of works in German and other languages."

"The Scholastic Bibliography, based at Emory University, is a searchable data base of literature on all aspects of scholastic writing and culture, including natural philosophy and medicine as well as theology and philosophy. The data base is still under development but already includes 1000s of items."