The following is a paragraph from a film industry magazine, published near the end of World War I. It describes a "newsreel" segment that was filmed at a ship camouflage studio. We suspect that this film featured William Andrew Mackay, who oversaw the camouflage of merchant ships, and was probably filmed in his studio in New York. This seems probable in part because of the mention of the use of ship models made of plaster. Mackay is known to have used plaster models, while the US Navy Camouflage Design Subsection (which Everett Warner oversaw) seems to have used wooden models. It is unlikely that the film survived.
NEW SCREEN MAGAZINE FOR UNIVERSAL PROMISES MANY ATTRACTIVE FEATURES in Motion Picture Educator, February 22, 1919, p. 1—
[The first issue of New Screen Magazine, a non-print Hollywood periodical in the form of brief news stories on screen, includes] “How We Foiled the Huns” [which] gives an interesting illustration of how work was carried on at the Camouflage Department. It shows the making of plaster models of ships, the artists at work on these miniature pattern ships, and the inspection of the finished product through a periscope to test the quality of its deceptiveness. The exact theory on which the camouflaging of ships was carried out is fully explained.
Note There are no full-color photographs of WWI ship camouflage. The original of the black and white image above (US government, public domain) has been digitally “colorized” using AI software. While its light / dark values are accurate, the choice and location of colors, even when plausible, may not be literally correct.