There are a few truly ephemeral items in this series such as circus decals and popcorn boxes, but the majority of the series consists of colorful circus posters of many different circuses spanning at least five decades. Many of the older ones are in poor condition due to their previous storage but were kept for their rarity or the short-livedness of the circus such as the Dailey Bros. Circus in the 1940s.

The materials in this series consist mainly of small items such as souvenir patches and exhibitor ribbons from model builder conventions. There are a few plaques, frames, and metal circus signs, but most of the true circus model artifacts did not come with the collection.