Regulatory documents are an invaluable archival source because they give us insight into the dynamic nature of cultural change and power relations.

About this time, Suetonius has exhausted all his imperial archival sources.

It has provided residents of the province with greater access to archival sources.

We'd go to an archival source and find 40 shots we could use, though we'd only have the place for one.

This was the first work covering that period based on a scientific study of the archival sources.

The books are written largely form primary, archival sources with extensive use of contemporary photographs.

Dating and historical circumstances might also be borne in mind when considering an archival source.

The conference provides an archival source for important reuse papers.

The dialogue was derived entirely verbatim from various archival sources.

In other cases, the film coverage of the topic was probably extracted from several archival sources.