Chess Praxis: The System in Action by Aron Nimzowitsch
In Chess Praxis Nimzowitsch elaborates on the strategies first adumbrated in My System with a series of deeply annotated games, demonstrating how his principles operated in practice. This was very much a manifesto for the Hypermodern School of Chess which also numbered Hardinge Simpole authors Richard Reti and S.G. Tartakower amongst its ranks.