Escher, Wyss and Co
of Zürich, Switzerland. London Office: 109 Victoria Street, Westminster, SW.
1872 'Charles de Gonzenbach-Escher, trading under the name of Escher, Wyss, and Company, of Paris, France'
1902 Advert mentions Alphonse Steiger
1925 Opened offices at 74, Bath-Street, Glasgow.
Sources of Information
-  Engineering, 5 Oct 1866
- The London Gazette Publication date:10 December 1872 Issue:23927 Page:6267
- The Engineer 1925/06/26