Do you have a source for that? I can't put any stock into the recollection of a nameless person off the internet. That's especially true when that person's prior recollection (that Smoot Hawley was passed before the crash) was incorrect.
If you happen to come across a copy, it's enjoyable reading for non-economists. I think that was the book that introduced the Laffer Curve.
Jack Kemp might have been the person who suggested it to me. Somewhere I recall hearing it referred to as "the supply-siders' bible."
You won't agree with it if you are a protectionist but you might get some insight as to how us supply siders think.