Bilder und Skizzen von Armin Kellersberger., "Sonderabdruck aus der 'Berner Woche.'", Main Heritage Shelves General, DS107.3 .K45 1929, Book, Item-ID: i10105761, BIB-ID: 1012212
by Irma L. Lindheim, introduction by Dr. Stephen S. Wise, illustrated by J. Benor-Kalter., Maps on lining-papers., Main Heritage Shelves General, DS107.3 .L56 1928, Book, Item-ID: i10204866, BIB-ID: 1022122, Also issued online.