Manuscript shows how Easter was calculated in the Middle Ages

The Raab Collection is an internationally recognized name in important historical autographs and documents. According to their website, they “search the world, finding important historical documents and bringing them to our historically passionate clientele.” Now, they might have found a rare late-medieval treasure: a mnemonic device written in Latin (a cypher) that can only be […]

Manuscript shows how Easter was calculated in the Middle Ages