Yes I do remeber that Bill Johnson book .As i recall it had a yellow cover and really quite small.
The old Bill was a trier alright.

Those Maxim books from TURF MONTHLY when Phil and Arnie Rogers used to own it.I still have a couple of theirs .
THE WENTWORTH

BLACK LANCE
And 1 other whose name eludes me.

Ah the good old days .
Cheers.
darky.