The La Scala Theater Museum in Milan was born in 1911 from the purchase of the collection of theatrical memorabilia of the antiquarian Jules Sambon. The museum is located inside the former Ricordi Casino in the same area where the Teatro alla Scala is located. The Museum preserves the traces of immortal artists, great composers and conductors. Furthermore, the museum collection is enriched by the presence of period paintings and instruments from the Sambon collection. We remember the presence of "La Spinetta del '600" made by Honofrio Guaracino and the painting by Evaristo Baschenis "Musical Instruments". Between the nineteenth and twentieth centuries the Teatro alla Scala underwent numerous changes, which also affected the Museum. Other works were purchased and incorporated into the permanent collection of the museum, such as: Arturo Rietti, “portrait of Giacomo Puccini”, the “portrait of Maria Callas” and the “portrait of Arturo Toscanini”, to name a few. The library and the historical archive enrich the collection with original documents that can be consulted by historians and scholars.