John,
I have been assuming that the Byran Izatt who participates here is his son or perhaps grandson; if so then I am sure your answers will be forthcoming.
Mr. Izatt used to advertise in GOLF DIGEST and sold many of his drawings as a result. I used to have a few of them as a kid. The drawings featured concentric ovals that were supposed to represent contour (hills or valleys), but they were not really contour lines, just a representation of them.