Mi esposa spotted that as we drove past and was, for a short time, annoyed by it because the type was so small in passing (valid). Figured it was just a matter of time before we found another but no joy there; had to circle back.

Now, even I, with your standard sub-standard American history schooling, am aware of Lafayette. What I didn't know is that it's a line from the song "Guns and Ships" from the musical Hamilton ... I'm not much for musicals, you see, not that we can usually afford a ticket. 

Keeping your eye out for references, though, is free. And you do never know what you'll find in Portland sometimes.