Reading, not math, was family’s common thread

Joni was cleaning out my hall closet last week and came upon a real treasure — the slide rule that her Dad had used for years when he was studying for his land surveyor’s license. When he and Bill Dickenson did private surveys, John always wrote up the descriptions and he had the old slide rule out all  the time.   Then she asked me how it worked. Asking me?  I liked math — but I had my limit and that was geometry.