How to paint permanent pictures

Maximilian Toch

Maximilian Toch was an American paint manufacturer and industrial chemist who developed a concrete filler method that was used in the construction of the Panama Canal. He was the co-owner of the New York firms Toch Brothers and the Standard Varnish Works, where he was head of research and production. Before and during World War I, he was a major contributor to the development of ship camouflage in the United States, as well as an early practitioner of the use of chemistry in the authentication of works of art.