These postcards tend to exhibit a folksy style that was common to the Union of Russian Artists.
While expensive to produce they were marketed at high prices since they were to aid charity.
Charles Wilhelms worked as a printer in the lithography shops of Seibert & Brother and Snyder & Black before becoming a partner in Schmolze Bros. In 1882 He formed a partnership with Robert Sackett and Edward Betzig to become Sackett, Wilhelms & Betzig.
This firm concentrated on printing advertising, sheet music covers, and trade cards.
Hampered by war they finally closed during the Russian Revolution. While most cards were issued under the Salmon Series name, some painted views were put out under the name Oilochrom.