Handbooks and companions provide a survey of the state of research about a topic or region, historiography or concise overviews.
Ashgate Research Companion to Women and Gender in Early Modern Europe
A Companion to Eighteenth Century Europe
Companion to the French Revolution
Oxford Handbook of Modern German History
Oxford Handbook of Modern Russian History
Oxford Handbook of the French Revolution
Routledge Companion to Modern European History Since 1763
Routledge Handbook of French History
The Blackwell Companion series of books are particularly useful for historiography since they give authoritative overviews of the scholarship that has shaped the understanding of a given subject, as well as ongoing debates among historians.
Search Omni by the following titles: Blackwell Companions to European History and Blackwell Companions to World History, to find such titles as:
Some are available online; others only in print.