That is impressive.........and not all that the entire library contains...........

Extent[edit]

The Vatican Secret Archives have been estimated to contain 52 miles (84 km) of shelving,^[4] and there are 35,000 volumes in the selective catalogue alone. "Indexes must be consulted in the Index Room and replaced in their original location. Publication of the indexes, in part or as a whole, is forbidden."^[5] The Archives support their own photographic and conservation studios.

According to the website of the Archives, the oldest surviving document dates back to the end of the eighth century. "Transfers and political upheavals nearly caused the total loss of all the archival material preceding Innocent III."^[6] From 1198 onwards, more complete archives exist, though documentation is scant before the 13th century. Since that time, the documentation includes items such as Henry VIII of England's request for a marriage annulment,^[7] and letters from Michelangelo.