The museum preserves original furnishings, precious objects belonging to the musician, including autograph scores of young compositions (the first work, the Orchestral Prelude found in 1999, and the 4 voices Mass of 1880), many letters by and Giacomo Puccini ( like those by Giulio Ricordi), paintings, photographs, sketches, memorabilia and precious documents, such as copies of work and drafts of the libraries of Tosca and La fanciulla del West, a rare draft of the score of La fanciulla del West, a score de La rondine, full of autograph annotations and musical sketches.