How much do you know of the working of the vast and wonderful Post Office Department? The officials of this department have, as in the case of all other Departments covered in this series, extended their courtesy to Dr. Rolt-Wheeler to enable him to tell us about one of the most interesting forms of Uncle Sam's care for us.
"Stamp collecting, carrier pigeons, aeroplanes, detectives, hold-ups, tales of the Overland trail and the Pony Express, Indians, Buffalo Bill—what boy would not be delighted with a book in which all these fascinating things are to be found?"—Universalist Leader.
For sale by all booksellers or sent postpaid on receipt of price by the publishers
LOTHROP, LEE & SHEPARD CO., BOSTON