Josef Sigall was born in Poland. He was educated in Vienna and was a gold medalist at the Royal Art Academy during 1909-15. He lived in South America before moving to Los Angeles in 1926 and to Saratoga in 1930. He worked as a portrait painter in California. In the course of his career he painted portraits of presidents Coolidge, Hoover and Roosevelt, and Hollywood notables including the actress Pola Negri. According a Los Angeles Times report, March 2, 1933 pg. 4, the Sigalls divorced on March 1, 1933.
The "Treasure Ship" float with a Spanish galleon bearing golden gifts; the intended inhabitants of the float were driven away by the rain. The Pasadena Memorial Flagpole (Goodhue Flagpole) is visible behind the float in its original location in the middle of the intersection of Orange Grove and Colorado Boulevard. The float was entered by the Hotel Vista del Arroyo.
The mural, funded by the WPA (Works Project Administration), was controversial especially because of the depictions of nudity and references to war in the central panel. The central panel was removed from the Frank Wiggins Trade School lobby (now LA Trade Tech) and returned to the Public Works Administration in 1935 and the other two panels were returned in 1939.