Description:Sports Illustrated Robert Riger, pencil on board from Jan. 19, 1961 issue. Multiple drawings on four boards depicting the art of blocking, with one showing the full line. 6" x 6" plus assorted sizes. Artists working with Sports Illustrated often created a series of drawings on one board. For purposes of describing these lots, individual drawings on the same board have been counted separately when totalling the number of illustrations in the lot.