archival source

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In addition, it would have been difficult to obtain primary or secondary archival sources for most of our measures.
This primary data is supplemented by a wide range of secondary data from academic, governmental and archival sources.
There is no consistent alignment between dates and places, nor is any indication given of the archival sources from which this information derives.
Relatively few archival sources have been used, and the activists' stories could have been woven more effectively into the wider historical context.
Archival sources mentioned are under the copyright protection of their respective institutions.
In addition, numerous articles and books utilizing archival sources have been published.
The section on archival sources is an excellent starting point, listing works of reference both print and electronic.
While archival sources for recent or current wars are typically non-existent, much can be obtained from interviewing participants soon after the events.
This case is based on an extensive and well-informed reading of the secondary literature, though apparently without using any new archival sources.
But such published and archival sources make severe demands on the historian.
However, to find evidence of this dissatisfaction-on which the press remained silent-one must go to the archival sources.
It is very well researched - the hugely detailed footnotes based on wideranging archival sources testify to its origins as a doctoral thesis - and well written.
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