I just saw a list on the Amazon forums today: link to forum thread.
They repeat in this order:
Illustrated manuscript UPDATE: One of my readers, dunedenisip, identifies this as a page of Lindisfarne’s Gospels: confirmed. It’s on page 30 of the British Library’s online edition
Harriet Beecher Stowe
Hercules (constellation) UPDATE: one of my readers, trek, identified this as Ophiuchus, and that seems to be right. Thanks to trek for that correction!)
Woman with book (I’ve been able to identify this as the Samian Sybil, by Il Guernico…or a copy of it? It seems light)
Man writing with quill UPDATE: One of my readers, ellebeth78, identifies this as Desiderius Erasmus by Hans Holbein, the younger…confirmed. Thanks, ellebeth!
Man at table with lion UPDATE: One of my readers, dunedenisip, identifies this as St. Jerome in His Study by Albrecht Dürer, and that’s confirmed…thanks, dunedenisip!
Cathedral floorplan UPDATE: One of my readers, dunedenisip, identifies this as Palladio’s plan of Villa La Rotonda, in I Quattro Libri dell’Architettura 1570. Confirmed.
Feedback and calculating machine