This dataset comprises 45 images from the Liber insularum Cycladum produced by Christophori Bondelmonti around 1422. The digitisation was sponsored by A. W. Mellon Foundation through the Pelagios Project. Due to UK copyright law they are technically in copyright until 2039. However, given the age of the manuscripts and their place of production the Library believes it highly unlikely a public domain release will offend anyone; more information can be found at: https://www.bl.uk/catalogues/illuminatedmanuscripts/reuse.asp