The mark consists of a curved line connected by two horizontal lines at the bottom, with two vertically-situated curved lines on both sides of the interior of the curved line, all of which form the general outline of a backpack. The letters YHT are situated vertically between the curved line "straps" of the backpack, and the word BOOKS is situated horizontally across the bottom and between the two horizontal lines.
Color is not claimed as a feature of the mark.