The Stephen H. Hart library is well known among academic researchers, historians and journalists. It is where the state historical society's collection of photographs and materials are kept.
The library closed Saturday so the materials could be moved to the new History Colorado Center which is scheduled to open in 2011.
"We have a number of things to offer our research patrons and the general public so people are trying to get last minute stuff done before we close," Library Curator Keith Schrum said.
The library staff will continue to work with patrons on photo orders, research requests and scheduling access to newspaper microfilm. An opening date for the new History Colorado Center has not been set.
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