OSCIP (Civil Society Public Interest Organization) Mestres da Obra tells its story since conception until recent projects, in this book with graphic project by Rico Lins +Studio. The work made with construction workers, in order to show artistic and creative abilities inside construction sites, and to promote the integration, self confidence and aesthetic sense through music, theater and visual arts is presented trough this book, that will be launched on march 29th, at Itau Cultural.