Series IX consists of advertisements, coupons, trade cards, and miscellaneous items with the name or logo of Strawbridge & Clothier. One interesting group is the postcards from an International event the store sponsored. Each card gives demographic and political information about a specific country along with the goods imported and sold by the store. There are several iterations of the Seal of Confidence, which was adopted by the store as a symbol that fair business would be transacted. There are a small group of photographs that depict different shoplifting scenarios. Also included are some materials related to the radio station, WFI, that started in the store. Some seemingly unrelated images are included in this series concerning art deco design, mattress manufacturing, and the Modern Athenians prints.