Image: Inter-grav
Size of this preview: 391 × 600 pixels. Other resolutions: 156 × 240 pixels | 596 × 914 pixels.
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Description: The first page of the papal bull "Inter Gravissimas" by which Pope Gregory XIII introduced his calendar.
Title: Inter-grav
Credit: http://www.henk-reints.nl/cal/gregcal.htm
Author: Pope Gregory XIII
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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