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InformationTimeline 
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When an event occurs, and as it develops, information about it is generated and disseminated. The first reports show up on the Internet, television, and the radio. These first reports focus on the quick facts: who, what, where. As time passes information filters through different types of resources, with the level of coverage increasing and becoming much more detailed and analytical.

Time
Source(s)
Type of Information
Authors
Audience
Locating
Day of the Event
Radio, TV, WWW General: who, what and where (usually not why) Journalists General public WWW search tools
Days Later
Newspapers, Radio TV, WWW Varies: some articles include analysis, statistics, photographs, editorial opinions Journalists General public WWW search tools, newspapers, library's current periodicals area
Week(s) Later
Popular and mass market news magazines (i.e., Time, Newsweek) Still in reporting stage (who, what, where and why); general; editorial and opinions; statistics; photographs; usually no bibliography available at this stage Journalists (usually not specialists in the field) General public to knowledgeable layperson WWW search tools, newspapers, library's current periodicals area, periodical databases
Months Later
Trade magazines and scholarly journals Research results, detailed and theoretical discussion; bibliography available at this stage Specialists and scholars in the field Scholars/
specialists, students
Periodical indexes and databases
One Year


to

Years Later
Scholarly journals; books;conference proceedings



Reference sources such as encyclopedias, handbooks, etc.
In-depth coverage of a topic; edited compilations of scholarly articles relating to a topic; bibliography available


General overview giving factual information; bibliography usually available
Specialists
and scholars in the field
General public to specialists




Anyone; scholars, students, layperson
Library catalogs, periodical indexes and databases



Library's reference collection

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