I’m not sure how much original art has survived from the Mintz studio. I certainly haven’t seen all that much of it over the years. But while Scrappyland was on its long hiatus, Stephen Worth of Animation Resources posted a bunch of Mintz works by veteran animator Ray Patterson–several of which feature Scrappy characters, including this model sheet for Scrappy’s Boy Scouts (1936). Click on it for a larger version–but more important, go to Animation Resources to see ’em all.