First edition thus, presumed first printing. Portions of an unspecified earlier edition were co-authored by Marshall McLuhan. Presumed printed and bound in the USA. Plain gray-green paper hardboard binding, with crisp white-stamped lettering to the spine. Unbumped spine head and tail, with sharp corners. Oblong, 8.5 x 9 inches. Text block firmly bound in. With unnumbered pages, and with numerous B&W photo illustrations, several of which are full-page. Some age-yellowing around the edges of the pages. A very clean volume, gently read. No remainder marks. Plain silver DJ with black-stamped lettering, not price-clipped. DJ is lightly rubbed. A Very Good copy in a Very Good DJ.