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 U.S. POST OFFICE 
																
																	The nation's most mechanized mail service is in operation in a purely functional building put up by the Fair, and the public is invited to watch. A multitude of new sorting and handling machines enables the Post Office to deliver twice-a-day, six-day-a-week mail to all Fair exhibitors. A nine-foot high ramp leads visitors through the working area, where they may watch the machines in operation while a recorded narration explains what is going on below. A museum of colorful international mailboxes is on display outside.
																 
																
																	* Admission: free. Open daily. 
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																U.S. POST OFFICE
															 Visitors climb a ramp to see one of America's most mechanized Post Offices in full operation. In this highly functional building, advanced sorting and handling machines process mail for twice-a-day delivery to all Fair exhibitors. Visitors hear a recorded explanation of the operations. Colorful mailboxes from many nations are on display outside. ¶ Admission: free. Open daily. |  |  |  |