Keywords: Zytglogge sketches 1534 - bell tower.jpg Peak of the Zytglogge tower in Bern Switzerland Ueli Bellwald Der Zytglogge in Bern Bern 1983 ISBN 3-85872-341-0 p 16 1534 Sketch by cobbler journeyman Sebastian Fischer of Ulm Public domain PD-old-100 Zytglogge Journeymen |