OK, thanks. I lived for years in Rumsey, CA and still explore the region on travels. I also have students in that region with whom I connect. I would ...

@jim-frame?ÿ How come I'm not seeing any of the photos? ?ÿ

@dave-lindell , @bill 93 I will be interested to look up those problems in the American Surveyor magazine. I'm a pretty simple sort of mathematician,...

@larry-best?ÿ Ha! You don't like thrill rides? I found that as I got older I grew less frightened.

@mathteacher?ÿ thanks for your ideas! Are you still a math teacher?

@bill93?ÿ That's a great story about the steel-toed boots. On a somewhat similar topic, I'm writing a lesson plan about Peary and his theft of the gr...

@bill93?ÿ yes, you're right about modern surveying in archaeology. What type of sites were you working on in Iowa?

@kent-mcmillan Hi there, it looks like your post on the yolo base line is several years old but it was just forwarded to me. You reference photos in y...