although at £7,275 they cost £1,100 more to build than a z class steam locomotive, each one saved about £1,700 per year in operating costs. the joke begins typically as "knock, knock" and in answer to "who's there? housing is of good-quality in general. there were 6,398 housing units of which 5,818 were occupied. this was followed, the next year, by a us tour. new york: viking press, 1938. translated from the german. his father died when he was ten years old, making him being raised by his mother. in addition to nickelodeon characters, the game also features players from real major league baseball teams. 