1. University of Pennsylvania, LJS 494 DS ID: DS728 Title: Sphaera mundi Author: Johannes de Sacrobosco Place: Italy Date: between 1425 and 1450
2. Columbia University Rare Book & Manuscript Library, MS X893 Al6 DS ID: DS19294 Title: Sphaera mundi Author: Moses Almosnino Place: Greece Date: 1546.