Starting from the first centenary of Carlo Cattaneo's birth in 1901, the Author reviews the publication of his works in concomitance with the interpretation and diffusion of his thinking. From the first ample collection of writings, down to Bertani and other friends, to the anthology by Gaetano Salvemini, from Alessandro Levi's monograph to the interpretations of Norberto Bobbio and Luigi Ambrosoli, the article shows the interweaving between the exegesis and the piecing together of Cattaneo's dispersed works, the complete retrieval of (...) which is being undertaken by the Italo-Swiss Committee set up in 1946. It ends with the new national edition of his works, which on the occasion of the 150th anniversary of his death in 2019 saw the publication of the fourth volume of his Lettere, the eighth volume in the entire collection. (shrink)