This 1955 museum catalogue documents the collections displayed at Palazzo Barberini in Rome under the Galleria Nazionale. Conceived as an art-historical reference work, it presents paintings and related works through concise entries that identify artists, subjects, attributions, and institutional context. Its structure reflects mid-twentieth-century museum cataloguing practices, with emphasis on classification, provenance, and the organization of the gallery's holdings. Beyond its practical function for visitors and scholars, the volume offers evidence of how the collection was interpreted and presented in the post-war period, making it useful for research in museum studies, Italian painting, and the history of collecting.