From Smash to Hunter (WPA P.O. murals)

 I love this one so much. The colors - the stamp. The style, The layout. Sheer perfection. Those stamps are probably still available. I'm pretty sure I do not have any purple envelopes. That one is dreamy.

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Here is something fun - art and the post office all in the same article. There are many nice photographs.

Link to P.O. murals

Then, at the bottom - there was a link to an article about mail art and the pandemic. I did not even read the article because I knew I had other things that needed to get done. 

Link to Mail Art article

Just one of the photos from the article about the murals in post offices.