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Most of the photos on this site were extracted from reference images (high-resolution tiffs, 20 to 200 megabytes in size) from the Library of Congress research archive. (To query the database click here.) Many were digitized by LOC contractors using a Sinar studio back. They are adjusted by your webmaster for contrast and color in Photoshop before being downsized and turned into the jpegs you see here.

 
 
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VINTAGRAPH • WPA • WWII • NORTH TUSCANY COAST, 1948

Inbox: 1912

Inbox: 1912

"Post Office Dept. Hupp Auto Railway Service." The download part of the Hupp mail-transfer system. Harris & Ewing Collection glass negative. View full size.

 

Where?

I wonder where the photo was taken. Note the electric RR on the left, steam RR with the Hupp apparatus on the right.

[Probably Chesapeake Junction. - Dave]

The Hupp System

I assume that the Hupp Automated system wasn't adopted by the Post Office Department. Most photos of RPO Mail Cars as late as the 1940s show the simple hand operated hook system that grabbed the mail sack, while offloading of the mail was done by a postal clerk in the car giving the bag a good solid kick that would send it flying clear of the train's backwash (air currents that would suck the bag into the side of the car or, worse, under the wheels of the train).

The RPO cars were fully functioning postal sorting stations. Many of them even had a slot so that you could drop a letter or a post card in and it would be canceled sorted. It's no wonder that post offices in cities were build next to or across the street from the passenger station.

[The Hupp System ended rather badly, when Albert Hupp was indicted for stock fraud. - Dave]

Zipping Along

Mail traveling on trains meant that to sort mail to its destination, postal clerks needed to know what mail went on what train, not only for towns along its own tracks, but mail that had to be transferred to other train routes. To do that, they had to memorize train schedules. So, what happened when passenger train service dried up? Mail started going on trucks and airlines which could travel every which way, not bound by fixed tracks. In the early 1960s, the POD reorganized into a hub-and-spoke system, with large centralized distribution centers that served scores of surrounding satellite offices. "Early 1960s, hmm?" you say. "That's about when the ZIP Code came in, right?" Yep. That's what it was all about. The first three digits designated the hub, or "sectional center" post office. The ZIP Code was just the visible portion of a fundamental change in the way mail was transported.

By the way, those rail cars didn't just carry sacks of mail; frequently they'd be carrying postal clerks doing enroute distribution - in other words, sorting the mail as they went chugging merrily along.

 
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