~  Be Kind to Your Eyes: Read and Write with Emeralite, H. G. McFaddin & Co., 1916via internet archive(click to enlarge)"More efficient than hot water bags or poultices"

~ Be Kind to Your Eyes: Read and Write with Emeralite, H. G. McFaddin & Co., 1916
via internet archive
(click to enlarge)

"More efficient than hot water bags or poultices"