8vo (postcard). ½ page.
Inscribed to the German dermatologist Alwin Scharlau.
Specializing in animal painting, Engelen was a member of the Flemish artists' association "Als Ik Kan". He created several murals as well as a painting with a Congo theme for the 1894 World Fair "Oud Antwerpen" along with Robert Mols, and was appointed a professor at the Antwerp Academy in 1897.
Self-addressed by the collector on the reverse. The Mecklenburg physician Scharlau (b. 1888) assembled a collection of artists' autographs by personal application.