Ints. & Exts. - Dicalite plant at Redondo, Redondo Beach, Calif., 1937

7 photographs of samples of Dicalite and the rocks from which it was mined, as well as men working with scientific instruments and industrial machinery, Redondo Beach, California, 1937 November 4. "Client: The Dicalite Co[mpany], Mr. Zink, 756 So[uth] Broadway; Classifications: I. Miscel[laneous] industry; Operator's report - name: Jack; out of city - Amount: 19.00; 47 miles: transportation at 7 c[ents] - Amount: 3.29; 4 hours: time @ 2.00 - Amount: 8.00" - on envelope.