Applied Austrian economics doesn't get better than this. Murray N. Rothbard's America's Great Depression is a staple of modern economic literature and crucial for understanding a pivotal event in American and world history.
The Great Depression was not a crisis for capitalism but merely an example of the downturn part of the business cycle, which was generated by government intervention in the economy. Had the book appeared in the 1940s, it might have spared the world much grief. Even so, its appearance in 1963 meant that free-market advocates had their first full-scale treatment of this crucial subject. The damage to the intellectual world inflicted by Keynesian- and socialist-style treatments would be limited from that day forward.