 Jacintho bought the Francisco Rodrigues da Cruz bookstore, successor to the Livraria Cruz Coutinho, the Livraria Popular, which was created by Antonio Augusto da Cruz Coutinho.The Library Jacintho Ribeiro dos Santos stood out for the good workmanship of its textbooks, use of images, and the high number of runs in any of its books, which reached the mark of over 100,000 copies in 1924, in a population of 1,157,141 in the city.As "Livraria Jacintho", it survived until 1945 when it was bought over by "Editora A Noite".