2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/193863In this contribution we go through the developments that in the years 1968 to 1974 led from the Veneziano model to the bosonic string.Latex 60 pages, 2 figures, uses svmult.cls. Contribution to the volume "String theory and fundamental interactions", dedicated to Gabriele Veneziano on his 65th birthday.High Energy Physics - Theorytext