 José de Barros Martins decided to leave the job to open a bookstore in a small room on the first floor of a building in the Rua da Quitanda in São Paulo, in 1937.He organized his own editorial department, under the direction of Edgard Cavalheiro and his first title in early 1940 was "Direito Social Brasileiro", dealing with the Brazilian social law, and authored by Antonio Ferreira Cesarino Junior.Martins promoted the liquidation of his company in 1974, but tried to remain in the business, the most valuable negotiating publishing contracts with Editora Record.