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Johannes Regiomontanus, Italian, 1436-1476 · 1476 · Hand-colored woodcut and letterpress in black and red, with pen and ink, and metal and string elements, on cream and tan laid papers, in original full alum-tawed pigskin over beveled wooden boards, sewn on raised thongs, blind tooled ‘all-over’ with small tools in an H-frame layout, with two brass hook-clasp fastenings, and hand-sewn headbands

From the collection of Art Institute of Chicago. Free to download, adapt and use — no permission needed.