The J.W. Westcott delivers mail to every freighter that passes through the Detroit River. (J.W. Westcott)

The J.W. Westcott invented “mail-in-the-pail” in 1874. And 144 years later, it’s still using the technique to deliver letters, as well as packages and sometimes pizza, to freighters in the Detroit River. 

It’s the only boat with its own U.S. ZIP Code.

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