Three volvelles,—examples of the printers’ craft. Printed by Ioannem Baptisum Soamscum for Theatrum Mundi by Giovanni Galluci, 1588; Erhard Ratdolt for Laudem Operis Calendarij by Joannes Regiomontanus, 1485; and Gregorio Bontio for Cosmographia by Peter Apian, 1550.