Image: American DeForest Wireless Telegraph Company's observation tower, 1904 Saint Louis Louisiana Purchase Exposition
American_DeForest_Wireless_Telegraph_Company's_observation_tower,_1904_Saint_Louis_Louisiana_Purchase_Exposition.JPG (283 × 537 pixels, file size: 27 KB, MIME type: image/jpeg)
Description: American DeForest Wireless Telegraph Company's observation tower, 1904 Saint Louis Louisiana Purchase Exposition
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