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Subject
- Chemical industry97
- Corporations97
- Water purification chemicals industry[remove]97
- Dearborn Chemical Company95
- Employees62
- Laboratories50
- Scientific apparatus and instruments48
- Glassware28
- Water--Testing14
- Water--Analysis13
- Machinery11
- Balances (Weighing instruments)6
- Offices6
- Trade shows6
- Barrels5
- Bunsen burner5
- Women employees5
- White, Charles S.4
- Women in science4
- Fager, E.P.3