A few years ago a lurker kindly sent me a book on the Great Depression. It was in rough shape but I leafed thru it and this fell out

How cool is that ?

Roger Babson was quite the guy

Fascinating Character

Role in development of Andrews Pitchfork

He learned to draw a nominal line through zigzagging market action on charts from George F. Swain, a Professor of Engineering when he worked with him and later taught this technique to Allan H. Andrews who further refined it into “Andrews Pitchfork” a now commonly used trendline indicator

https://en.wikipedia.org/wiki/Roger_Babson

I Must say from his picture here he bears a striking resemblance to my Buddy Dave ( Rambus) …who is also a fascinating character.