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Register of the Penn Chemical Works (Campo Seco, Calif.) Assay Records, 1912-1919
Mss14  
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Container List

 

BOX 1: DAILY ASSAY RECORD

 

Vol. 1 Jan. 20, 1912 - Mar. 7, 1914 (100 pp.)

 

Vol. 2 Jan. 3, 1914 - Feb. 29, 1916 (100 pp.)

 

Vol. 3 Feb. 29, 1916 - May 19, 1918 (100 pp.)

 

Vol. 4 Mar. 26, 1917 - Aug. 28, 1918 (42 pp.)

 

Vol. 5 May 20, 1918 - Mar. 29, 1919 (22 pp.)