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Abstract An interesting collection of early twentieth century analyses of ores collected by Benjamin Franklin Fackenthal, Jr., a prominent chemist of the era. Fackenthal established laboratories at the Durham Iron Works in Riegelsville, Pa and also in Lancaster, Pa. where mineral analysis was made of iron ores and limestone from samples sent by clients. What is especially interesting about the notebook is the listing of many iron ore and limestone quarries located in the Lehigh Valley area. Among...