Doodlebugs-in-Chief

While the whole world knows what Clinton was doodling while in office, a recent article sheds light on other presidential meanderings of a different sort:

...in at least one respect, Hoover's sad, single term wasn't a waste of time. In fact, he was apparently never more productive than when supposedly wasting his time, assembling what may be his supreme presidential legacy: The nation's foremost executive doodler.

I wonder if Presidential Doodles, just released by Basic Books, includes a quip (I swear is from something Peggy Noonan wrote) about how Republicans tend to sketch abstracts and Democrats draw people, but that Ronald Reagan was doodle-dextrous.