Mises.org sells a number of t-shirts that have photos and slogans from the founders of the Austrian School of Economics. One prominent founder is Eugen von Boehm-Bawerk, an astute economist and a cool mug-shot. Boehm-Bawerk wrote classic treatises on economics that influenced Ludwig von Mises. I personally recommend Basic Principal of Economic Value.
Oh, yeh ... intellectually speaking, he is as far away from Che as is possible.
For additional reading, try Interventions are always losers.