Licenses. Special license regulations 7, [governing] cainners of peas, tomatoes, corn, dried beams, salmon, sardines and tuna, and manufacturers of tomato catsup, tomato soup, and other tomato products, manufacturers of condensed, evaporated, or powdered milk; [special license regulations] 8 [governing] packers of dried fruits, effective June 15, 1918, including official interpretations.