People often say they learn a lot by reading my column. Believe me, I'm learning a lot myself. One of my favorite examples is when I found the answer to a question from Sue Duxbury of Fresno: "What is the rock structure on Palm Avenue south of Shields?" The answer ran Dec. 10.

I found the river rock and red brick structure at the northeast corner of Palm and Simpson avenues, one block south of Shields. I also found a drawing of it in Doug Hansen's "Fresno Sketchbook," but the caption put it on Simpson and Van Ness, not on Palm.

So I drove back out to the neighborhood, where I found three identical structures on Van Ness at Simpson, Princeton and Michigan avenues. It was an "ah-ha" moment. Librarian and author Bill Secrest Jr. identified the monuments as boundary markers for the Boulevard Gardens subdivision build in the 1930s.