This is next in the series of adult grayscale coloring book series featuring photographs and/or images from Dr. T's personal collection. They can be colored with your choice of colored pencil, crayon, pastels, or gel pens just to name a few. Grayscale coloring is different from line drawing coloring in that you utilize the existing shadows to help enhance the colored page. Book features: 42 unique images to colorEach picture is 8x10Pages are printed one-sided to prevent bleed through to next page (if using markers use a sheet between the pages).Printed on pure white #60 paperGrayscaled to just the right tone so the page isn't too dark to color but not so light to lose detail.