PAPER MILLS. RIERA NOYA.- Pen drawing, watercolor, of the banks of the Noya river, where, according to the numerical indications, they would be located: the flour mill of the Marqués de Cerdañola, the dam that Carlos Giberte began to build to convey the waters to the paper mill which, in turn, he had begun to build and which due to debts he had to sell to Félix Prat, and which in turn, through bankruptcy of his son and heir, sold to the Guarro house, as well as the paper mills that Félix Prat built after having taken in eufiteusis that of the Marquis of Cerdañola. Important handwritten document from the period on the paper industry in Catalonia.