The items in the series refer to the Italian Communist Party (PCI), to the leaders of the PCI and to the congresses held by the members of the party. The series is mainly composed of press clippings from the Italian newspaper "L'Unità", the daily of the PCI. A group of folders is focused on the so-called "historic compromise" (i.e. an attempt to reach an agreement between the Italian Communist Party and the Christian Democracy in the 1970s), whereas some other folders describe the issues between the PCI and the three founders of the journal "Il Manifesto" - Rossana Rossanda, Luigi Pintor and Aldo Natoli - accused by the PCI of maintaining views not conforming with the ideas of the main communist party in Italy, and therefore expelled from the PCI. The other folders focus on the relations between the PCI and the communist parties that were active in other countries (such as Hungary, Poland, Czechoslovakia, Soviet Union, Western European communist parties), as well as relations with non-communist countries. The main languages of the items are Italian and English.

The series contains printed textual materials of good condition.

The collection is organized alphabetically, except for the last three folders.