The archive collection holds the legacies of Slovenian theatre creators, sorted by name and keywords. It comprises unique artifacts that offer a rich image of the Slovenian theatre history. Typologically, it holds personal portfolios of Slovenian theatre creators, their correspondence, personal documents, manuscripts, notes, connected general and official documents, as well as all relevant materials that the creators themselves had collected during their lives. The collection is organized and accessible with the help of catalogue cards, which have been modernized by computer processing and digital approaches.
This archive collection also holds the Hemerotheque. It holds articles from 1963 to present times and is regularly updated. Until 1980, the articles in the collection were sorted chronologically, but in the period from 1980 to the present, the chronology has been subordinated to genre or the name of a specific theatre. A specialized section holds biographical articles on theatre creators, organized alphabetically.
One of the archive collections also holds a digital database on the current production in the Slovenian professional and semi-professional theatre as well as the theatre production that isn’t connected to any institutions. Each year, this database serves the Institute to create the Slovene Theatre Annual. The database currently holds detailed reports of every performance in the last 150 years of Slovenian theatre history, from 1867 to 2017.