![[thumb:img_2.jpg]](/file/advertisement_merkel/img_2.jpg)
Press advertisement of Merkel Motor Wheel made by Hendee. Published in Popular Mechanics, June 1922. Click to enlarge
![[thumb:img_1.jpg]](/file/advertisement_merkel/img_1.jpg)
Press advertisement of Greyhound bicycle from 1890's. Click to enlarge
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