Series I consits of material donatede between the 1990s and 2016 and contains primarily black-and-white photograph prints depicting Rocco Siciliano's career in civil service and business dating parimarily from teh 1960s and 1970s. Boxes 1-3 were donated between the 1990s and 2009. They consist primarily of black-and-white prints depicting Rocco Siciliano's work in business and civil service dating from 1969 through 1979. Box 4 contains material donated between 2009 and 2016; folder 18 is partially digital only and folder 19 is digital only. The digital only files were donated on CDs by Rocco Siciliano and are in JPG format. Material in Box 4 depicts Rocco Siciliano's work for the Eisenhower administration and Rocco and Marion's involvement in business and philanthropy.

Series II contains the addendum donated in 2019. Boxes 5-7 contain black-and-white and color photographs depicting Rocco Siciliano's childhood and young adulthood, including his military service during World War II; personal and professional photographs of Rocco and Marion Siciliano and their family; black-and-white prints depicting Rocco Siciliano's political appointments in the Eisenhower and Nixon administrations; color photographs depicting Rocco Siciliano's participation in the Dwight D. Eisenhower museum and memorial. Box 7 is oversize and contains primarily primarily black-and-white, matted photographs depicting Rocco Siciliano's political career; it includes signed photographs of political figures known to Siciliano in Folder 1.