In 2019, the Superintendency of Archaeology, Fine Arts, and Landscape for the metropolitan city of Genoa and the provinces of Imperia, La Spezia, and Savona initiated a comparative technical study on the works of the Carlo Levi Gallery in Alassio. The study aimed to investigate the conservation status of the paintings in relation to environmental variables and the various techniques employed by the painter throughout his artistic career. This paper examines the findings of this research, aiming to provide a useful tool for similar investigations into the artist's works in other Italian museums. Additionally, the authors analyze the restoration of the Portrait of Italo Calvino conducted in 2021-2022.