Vatican Secret Archives

From the Telegraph:

A 13th-century letter from Genghis Khan’s grandson demanding homage from the pope is among a collection of documents from the Vatican’s Secret Archives that has been published for the first time.

The Holy See’s archives contain scrolls, parchments and leather-bound volumes with correspondence dating back more than 1,000 years.

High-quality reproductions of 105 documents, 19 of which have never been seen before in public, have now been published in a book. The Vatican Secret Archives features a papal letter to Hitler, an entreaty to Rome written on birch bark by a tribe of North American Indians, and a plea from Mary Queen of Scots.