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BetzDearborn, Incorporated Records, 1892-1997 (inclusive) 1920-1989 (bulk)
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Pennsylvania Horticultural Society [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Lehigh University Special Collections [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Haverford College Quaker & Special Collections [Contact Us]
Held at: Haverford College Quaker & Special Collections [Contact Us]
Held at: Princeton University Library: University Archives [Contact Us]