Advertising Poster Millers Dog Food British Bulldog Canine. Original vintage advertising poster for Millers A-1 Dog foods - Strength and Health - Design features an illustration of a British Bulldog in a black box with a yellow stripe on a white background. Promotional posters also offers free samples and free dog food. Horizontal. Fair condition, staining, restored paper losses, restored folds, backed on linen. Country of issue: UK, designer: Unknown, size (cm): 24x67, year of printing: 1930s.