Works are listed by the artist's family name and in the few cases of artists known only by a first name, such as "Bartolomeo Veneto," we have retained the name "Bartolomeo" rather than the qualifier. In the few cases of nicknames that have gained universal currency, such as "Clodion" or "Cigoli," we have kept the commonly used nickname. Works by anonymous artists who in modern times have been given names such as "Master of the Marble Madonnas" or "Master of the Medici Chapel Altarpiece" are to be found under "Master" at the letter "M". Anonymous works have been grouped under "Unknown" followed by the school or country of origin of the artist. For easier access, copies after known works or works attributed to the school or following of an artist have been grouped under the name of the original artist. Equally, to facilitate research, when a work has changed attribution we have included the old attribution.

For each work we have given the title, the nature of the support (canvas, wood, paper, etc.) for paintings or of the material (marble, bronze, terracotta, etc.) for sculpture, the signature, date, and inscriptions in certain cases. The number following the date of acquisition represents the accession number.

Provenances are given as they are known at the present time, as simply as possible, in chronological order. They start with the earliest known data and follow to acquisition. When known changes in attribution have occurred these are recorded. This data will be amplified and enriched in months to come.