John C. Allen: RhB 649
John C. Allen: RhB 651
John C. Allen: RhB 3509
John C. Allen: RhB 705
John C. Allen: RhB 3502
John C. Allen: the Brusio spiral
John C. Allen: RhB 3515
John C. Allen: RhB Brusio spiral viaduct
John C. Allen: RhB Brusio spiral viaduct
John C. Allen: RhB 3513