Just bought this on ebay, reasonable price. Penrose Annuals are brilliant, rich in content: from the mundane technicalities of press technology to the cutting-edge of typographic development. I've been collecting them (very, very slowly) since I started working. I've got eight, there's lots more to get but I thought it would be good to get some highlights online.
They're actually not that difficult to get hold of, although I expect there's rarities.