UPDATE: Steve shared this link about a ‘Lady Jeep’ article written for the Heinz Center, which led me to Amazon. That listing included a date and magazine for this ad … the August 31, 1946, issue of the New Yorker. And, there’s a better pic on Amazon.

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Originally published May 19, 2019: This ad was on google image search, though it was gone from the actual destination page to which Google directed me. So, I have no date or magazine name to identify when this ad was published. It treats the Army jeep as a tomboy and the wagon as a Lady.