How often are the databases updated?

HRAF collections are expanded and updated annually, with new cultures added to eHRAF World Cultures and new traditions added to eHRAF Archaeology typically in the spring.

eHRAF World Cultures

Currently, we add 10-20 cultures annually with approximately 20,000 pages. About 25% is new ethnographic material and the remaining material is converted from the microfiche collection. See Culture Updates for recently added and forthcoming cultures.

eHRAF Archaeology

Currently, we add five archaeological traditions annually with approximately 10,000 pages. The focus is on archaeological tradition sequences. Some randomly selected traditions are also added from the Outline of Archaeological Traditions. See Tradition Updates for recently added and forthcoming traditions.


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Category: About the eHRAF Databases
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