"Send for a booklet showing men with and without the Perfect Leg Forms"

Why!?!?
From the always entertaining and informative Modern Mechanix blog

“BOWLEGS and KNOCK-KNEES” UNSIGHTLY (Mar, 1922)

Also check out the craziness that is Windshield Cleaned by Jets of Water While Driving (Nov, 1936) - never catch on, surely :-)

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