| Keystone View Company Most Gigantic Defensive Work in World - Great Wall of China on Rugged Hills near Hankow Pass. [Tour of the World 100 pieces.] n.d. Stereoview Private collection of Tomasz Bielawski LL/102275 H.C. White sold their negatives to Keystone in 1915 so this stereoview is also found on earlier H.C. White mounts.
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