Abstract: A poster mounting system is disclosed herein that, in various aspects, includes a slot disposed in a top rail and a poster insertably received in the slot. A clip may be insertably received within the slot to secure the poster. The clip, in various aspects, is formed as a unitary longitudinal member divided into a first segment and a second segment with an apex between the first segment and the second segment defining an obtuse angle with respect to the first segment and the second segment. When positioned in the slot, portions of the clip are compressively biased against a side face of the slot and other portions of the clip are compressively biased against portions of the poster to frictionally compressively engage the portions of the poster against an opposing side wall, in various aspects. The clips are removable to allow disengagement of the poster, in various aspects.