Book stack Photo Book stack FreePhoto Free Download ▾ 5760 x3840 3840 x 2560 2560 x 1707 1920 x 1280 1280 x 853 800 x 533 5760 x3840 3840 x 2560 2560 x 1707 1920 x 1280 1280 x 853 800 x 533 License: Free for personal and commercial use. Not for sale or redistribution. Appreciation not required but appreciated. Facebook Twitter Camera: Canon EOS 5D Mark III 70/1 mm f/11.0 1/8 s 200 ISO paper text education school research books learn library literature reading textbook studying encyclopedia book stack whitespace Colors: