... Returned Letter Office therein. Another new feature in Post Office development is the use of Stamping Machines for the rapid obliteration of the postage stamps and for the impression of the day's ... Martin's-le-Grand, the gas supply failed, and the largest Post Office business of the world was placed at a standstill. The officials, however, were equal to the emergency, and cartloads of candles ... frontage of the street, on the west, or Post Office, side, and that[Pg 178] there were only five other separate buildings, which were each detached, and covered the remainder of the length of the...