[Firenze], Stamperia Reale, 1869
Royal decree by the King Vittorio Emanuele II to appoint the members of the scientific Commission charged to take up the noble contest of investigating the new physical phenomena, and explain the mysterious ones.
INAF-Osservatorio Astronomico di Padova, Archivio Storico, Archivio antico, B. XXI, f. 1