Trade literature, 1925-1926.
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Philadelphia Quartz Company
http://n2t.net/ark:/99166/w6867b79 (corporateBody)
The Elkinton Company began as a Philadelphia candle and soap shop founded by Joseph Elkinton in 1831. In the 1840s the company began to diversify its products to include a line of "fancy and specialty soaps." By mid-decade Joseph's son, Thomas, began to develop a synthetic detergent. After more than a decade of experimentation with soluble silicates, the firm built a furnace for synthesizing detergents with a silicate base. During the Civil War, when the supplies of rosin from the S...