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"Keep Those Tips Up" image is classic Lange material. This poster features a model (Lange Girl) from 1972/73 in a yellow one-piece suit. Rumor has it that this was one of the first ever air brushed ski images, and of course, the Lange boots and skis are the central focus. Gives new meaning to "moguls" skiing.
If anyone has any more information regarding this poster or the model, please send a DM.