The members of Inconnu, one of the most prominent dissident artists’ groups of the 1980s, got involved in the emerging Hungarian environmentalist movement in the second half of the decade. This movement was primarily organized around the issue of the Gabčíkovo–Nagymaros Dams that was a joint project of the Czechoslovak and Hungarian states to build a large barrage project on the Danube that would profoundly shape the historical landscape of the river around Visegrád. The Inconnu groups’ focus on environmental issues was deeply related to their critique of the state-socialist regime.

Tibor Philipp was an active member of the Hungarian alternative opposition and the independent artist group Inconnu during the 1980s. The archival collection contains documents and artworks associated with this period. As the artist group's activities were very diverse, the collection is one of the most colorful in the Archives, including art works, traditional textual, audio, and photo materials.

On the occasion of the 50th anniversary of Moon Landing, OSA presents the press coverage of the event in three different countries.

In addition to the publications, books, card and wall calendars issued by Áramlat [Stream] and Szabad Idő [Free Time] managed by Jakab, the collection containing classic samizdat material of the era was offered to Blinken OSA in 2016 and has now become available for researchers after being arranged and described in 2019.