Two and a Quarter #4: 44-O’Shaughnessy. Links:
https://en.wikipedia.org/wiki/Michael_O%27Shaughnessy
http://www.sfgate.com/outdoors/urbanoutings/article/The-44-O-Shaughnessy-Bus-winds-through-city-s-5460762.php
https://www.amazon.com/Damn-Fine-Cherry-Pie-Recipes/dp/0062495550