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In 1937, American supermarket owner, Sylvan Goldman, came up with a way to get his customers to spend more.

He introduced his 'folding basket carriers' in his Humpty Dumpty chain in Oklahoma, hiring models to push them round his stores.

They caught on, becoming known as shopping carts in the USA.

Rachel Naylor uses clips from a 1977 CBS interview of Sylvan with Charles Kuralt to tell the story.

Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more.

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(Photo: Sylvan Goldman, with models of his shopping trolley. Credit: Don Tullous, Oklahoma Publishing Company Photography Collection, Courtesy of the Oklahoma Historical Society)