Here you go boss hog: Sketchy Stories: The Sketchbook Art of Kerby Rosanes https://www.amazon.com/dp/1631061755/ref=cm_sw_r_cp_apa_i_xeANDb8R7KGJ3
Not the same sketchbook, but another one by the same artist
::EDIT:: I have that one and a couple of his coloring books. They are all amazing and an incredible value.
Not sure if it's the exact book from the gif but the artist sells one just like it on Amazon