Joaquin Sorolla's catalogue raisonné is the culmination of a project that was initiated by Francisco Pons-Sorolla and Blanca Pons-Sorolla, which assembles all the work of the painter known so far (over 4,000 works). The aim of this project is the publication of five volumes in which the works by Joaquin Sorolla Bastida (1863-1923) will be presented by themes: 1. Sorolla Museum; 2. The Sea and the Beach; 3. Portraits; 4. Landscapes; 5. Composition Works. Within these themes, the works will be presented chronologically, so that the evolution of the painter can be observed in each case. This first volume of the catalogue is dedicated to the collection of the Sorolla Museum, which houses the largest collection of the artist's works. It displays a comprehensive panorama of the painter's oeuvre through 1,300 pieces. The project is currently being financed by the Sorolla Museum Foundation, and is being carried out by Blanca Pons-Sorolla, with the collaboration of Teresa Jiménez-Landi and Mónica Rodríguez Subirana. Since the beginning of the project in 1987, a profoundly better understanding of Sorolla's work has been achieved.