trade card meaning in Information Science terminology / glossary / dictionary is:
A small papercard, printed or engraved to advertise a specific business or product, usually a manufactured item. Trade cards originated in 17th-century London, where they were printed by the woodcut or letterpress method (see this example). By the 18th century, copperplate engraving predominated, in monotones or tinted. After 1830, color lithography was used (example). One of the most popular forms of advertising before distribution of newspapers and periodicals became widespread, trade cards are a form of ephemera collected for their indication of consumer habits, social values, and marketing techniques. They are of interest to scholars across the disciplines of business history, graphic design and printing history, and social and cultural history. Click here to view an onlineexhibition of 19th-century American trade cards, courtesy of the Baker Library at the Harvard Business School. Also spelled tradecard. See also: business card.