From an Article for SABR by Bill Swank:
In an era when "inside baseball" ruled supreme, Cravath bucked the trend and preached what he practiced. "Short singles are like left-hand jabs in the boxing ring, but a home run is a knock-out punch," he asserted. "It is the clean-up man of the club that does the heavy scoring work even if he is wide in the shoulders and slow on his feet. There is no advice I can give in batting, except to hammer the ball. Some players steal bases with hook slides and speed. I steal bases with my bat."
That's really cool.
I found all of these (and some more) at one store in Cooperstown. Most of the stores were marked up heavily for the tourist crowd, and most of the prices on the cards under glass were well beyond what I would expect to pay for cards at local shows. In spite of that, This store had very reasonable prices on vintage singles and I was able to negotiate a little mark down on price for buying in bulk.