||Blank postcard. Handwritten 25 in top left corner. Manufacturer's text: Hollow Horn in this portrait illustrates the very elaborate feather head-dresses or war-bonnets affected by leading Indians. Contrary to popular belief, it is not possible to determine solely from an Indian's war-bonnet to what tribe he belongs. This was possible to a considerable extent years ago, but since the Indians of all tribes have been attending world's fairs and exhibiting themselves on other similar occasions, they have come to realise the popularity of the more elaborate war-bonnets and thus leaders of all tribes have adopted the gorgeous appointments formerly used almost exclusively by the Sioux.