Premium grayscale adult coloring book -30 creative grayscale images of world war 2 historical pictures -Each coloring page is printed on a separate sheet to avoid bleed through -Each picture is framed for framing on wall of your colored picture Our Coloring Book Series is designed to appeal to all ages, and especially animal and natural lovers. Both Beginners and advanced artists can create beautiful pictures using our coloring book. Each picture is printed on one side pure white paper to minimize scoring and bleed-through. We suggest using crayons and high quality colored pencils for the best results.