Historian

Prepares in narrative, brief, or outline form chronological account or record of past or current events dealing with some phase of human activity...

Prepares in narrative, brief, or outline form chronological account or record of past or current events dealing with some phase of human activity, either in terms of individuals, or social, ethnic, political, or geographic groupings: Assembles historical data by consulting sources of information, such as historical indexes and catalogs, archives, court records, diaries, news files, and miscellaneous published and unpublished materials. Organizes and evaluates data on basis of authenticity and relative significance. Acts as adviser or consultant, and performs research for individuals, institutions, and commercial organizations on subjects, such as technological evolution within industry or manners and customs peculiar to certain historical period. May trace historical development within restricted field of research, such as economics, sociology, or philosophy.