LAWRENCE, Kan. (AP) — A collection of materials highlighting some of the nation’s radical political beliefs is celebrating its 50th anniversary at the University of Kansas.

The Lawrence Journal-World reports that the Wilcox Collection of Contemporary Political Movements at the Spencer Research Library has more than 100,000 items. They include bumper stickers and posters emblazoned with messages that include “Support gun control, disarm the FBI.” The collection also features books about extremist movements.

Seventy-two-year-old Laird Wilcox, of Olathe, began collecting the materials as a youth. Wilcox sold his collection to KU in 1965, and continues to donate items to it. The library also has a fund with which to purchase new materials to keep it growing.

To mark the anniversary, some pieces are on display at the Spencer Library.