In 1968 the definitive union was held and it integrates both museums being called Museo Provincial de Soria first, then Museo de Soria and finally Museo Numantino.
En 1968 prodúcese a unión definitiva e integra de ambos os centros chamándose Museo Provincial de Soria, primeiro, Museo de Soria despois e para rematar Museo Numantino.