Attended the Humanistic-Gymnasium in Rastenburg and, from 1893, the Sophien- Gymnasium in Berlin. Attained school-leaving certificate for 'einjahrigen militaerdienst'. Learnt the fashion-business at Kraft & Lewin and was first fashion-designer for some years at Seeler & Cohn. Together with his partner Alfred Salomon, opened the business Salomon & Kaminsky on 1 October 1910 (childrens and ladies coats and costumes - high quality merchandise) at Schutzenstrasse 60 - 61. Later in the Mohrenstrasse, Berlin-Mitte. Emigrated to South Africa in 1935.
According to his son Klaus, Walter was a very wealthy man and extremely generous. He supported many of his and his wife's family financially as well as helping support his daughter Eva's persecuted gay friend. In 1904 he already earned 4800 Marks per annum. He enjoyed the finer things of life and in 1912 despite not being able to drive himself, owned 3 cars, a Chrysler, a Mercedes and a Protos Sport convertible.
He travelled a lot on business, often with his models accompanying him, to show his fashion designs to potential buyers. On those travels to Paris, Switzerland, etc he visited his youngest son who was exiled in Lausanne after 1933.
There is further information about Alfred Salomon at the Digital Monument to the Jewish Community in the Netherlands