Service Tree

The Service Tree lists all services in "branched" groups, starting with the very general and moving to the very specific. Click on the name of any group name to see the sub-groups available within it. Click on a service code to see its details and the providers who offer that service.

Historical Research

Taxonomy Code: TR-8000.3000

Programs that conduct research which analyzes and interprets the past using a wide variety of sources which may include government and institutional records, newspapers and other periodicals, photographs, interviews, films and unpublished documents such as personal diaries and letters. Historians usually specialize in a country or region, a particular period, or a particular field such as social, intellectual, cultural, political or diplomatic history. Some may collect detailed information about individuals while others help study and preserve archival materials, artifacts and historic buildings and sites.

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