Ladder to heaven / Ostrich feathers, Per Gradus Velox / Vi Nulia Invertitur Ordo (title on object), Symbola Divina et Humana Pontificum Imperatorum Regum (series title), An emblem with two representations. Above a ladder raised to heaven. Below a bunch of ostrich feathers. These are mottoes of Henry I and Stephen of England. print maker: anonymous, after print by: Aegidius Sadeler (II), 1666, paper, engraving, letterpress printing, height 117 mm x width 64 mm.