Annales
With colleague Lucien Febvre he founded the Annales School in 1929, by starting the new scholarly journal, Annales d'Histoire Economique et Sociale ("Annals of economic and social history"), which broke radically with traditional historiography by insisting on the importance of taking all levels of society into consideration and emphasized the collective nature of mentalities.
Bloch has had lasting influence in the field of historiography through his unfinished manuscript The Historian's Craft, which he was working on at his death. Bloch's book and What is History? by Edward Carr are often considered two of the most important historiographical works of the 20th century.
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