Original 1909 Prophylactic Tooth Brush ads, which were among the first to be sold in individual packaging to emphasize "sterilization".
Images of the standard brushes of the time, which used stiff, coarse hairs taken from the backs of hogs . Toothbrushes of 1909.rar
Scans of handles crafted from animal bone or bamboo, before the widespread use of molded plastics . Original 1909 Prophylactic Tooth Brush ads, which were