I haven't been able to get a picture of the one under the underpass on Poplar (the 2nd one I saw), but I'm still planning to.
I was pointed to these next 2 by Sarah on a previous post. This one is the 3rd one I've seen:
and this one is the 4th:
#5 is pictured with Bubble-Blowin' Raccoon.
#6 was suggested by an anonymous commenter, and i found it just like they said under the underpass at Germantown Parkway and Walnut Grove. There was too much traffic and no place to pull over, so I didn't get a photo of it.
#7 is the one Coral suggested:
I'm not good at discovering them, but I love going out and getting photos of the ones I'm told about. Thanks! These little day-brighteners are great spots of cheer in the city.