As I was wandering through the Lost Barrio (a commercial area on a dead-end part of Park Avenue south of Broadway) on August 22, 2018, I spotted this little mural on a wall by the entrance to Tooley's Cafe. It seemed to have been painted around with new wall paint, as if it had been there for a while.
The caption was a bit faded out; I darkened it. It says “Painted for Patricia / In the year Two Thousand Ten / Francisco”
Marvelous Meyer. If you know whether they're the same artist, or what the artist's name is, please leave a comment below. (You can remain anonymous.)
Update (June 20, 2019): Thenks to David Aber for tracking down the artist. It's Francisco Franklin, a Tucson artist for 50 years. He sells other artwork, too; he's represented by Jane Hamilton Fine Art. His page on her website is janehamiltonfineart.com/franklin/.