You can download all puzzles in a bundled PDF. (thanks, Peter Belford!) Artists (and anyone): feel free to print and distribute these as you like.
Below are links to four puzzles that lead to a fifth puzzle and a final answer. Each puzzle's solution will be one or two words.
If you solve it, send your name (or pseudonym) and the solution to me at erich@acm.org. I'll add you to the list of solvers here.
Those honored few who solved the SOS puzzles of 2024: SandyS, Patrick
For more art you can see year-round and much else in Somerville, see the SomeSights map and other fun maps here.
The shortcut for this puzzle page is https://bit.ly/sospuzzles, and here's the QR code to get here - use it as you like!