He was also the joint co-founder of the Escuela Patmos of Barcelona in 1958 with five other couples (the Amor Sagués, Tornos, Poblet, Puche, Comas, and Latorre), Priest Joan Alemany i Esteve, and writer and pedagogue Emili Teixidor.

The Salvat Group associated with the Boroli family, owner of De Agostini,[2] which had initiated the sale through fascicles in Italy.

[3] Manuel Salvat Dalmau was the second-most shareholder of one of his family-in-law's companies, Matesa (Maquinaria Textil del Norte de España S.A.).

His brother-in-law and major shareholder (Juan Vilá Reyes) was condemned of swindling as he benefited from loans and export tax exemptions by falsifying sales contracts.

Even though he was not charged in the Matesa Affair, Manuel Salvat took care of the debt with the Liquidation of Export Credit Commission (Spanish Ministry of Finance,[6]) which allowed him to carry on with his publishing tasks.