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19th Century Masterfile

The Great Index to the Great Century.

Public Documents Masterfile

The First Stop for U.S. Documents Research.

Reference Universe

Your Collection Illuminated.

We’ve been helping researchers for 22 years.


We produce authoritative research databases in History, Major Reference Works and U.S. Government Documents.


Our products are used within academic, public and specialized libraries throughout the world.

Don’t just take our word for it..

University of Western Ontario

With Reference Universe, I’ve discovered resources we had right under our noses, but didn’t know about. It really enhances discoverability of our resources.


Libraries don’t have to be as specialized as we are to benefit from using 19th Century Masterfile. Even undergraduate programs with a strong modern history curriculum would benefit, especially if research is a focus.  It gives our researchers fuller, more well-rounded results than relying solely on standard STM databases would.

Public Documents Masterfile is a unique resource for government information librarians. Moreover, it is designed by people who know the idiosyncracies of historical finding tools and how to bring them together via a seamless interface

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