Document N2GmXaGnpmVQpLZNjEJ4nKrLy

INTERNATIONAL SMELTING AND REFINING COMPANY F. O. CASE KANAQCR Or MIOWEST DISTRICT December 26, 1939 20 N.WACKEP DRIVE CHICAGO. ILLINOIS Mr-. Frederick Laist, VIce-President, International Smelting and Refining Company, 25 Broadway, Mew York City. Dear Mr. Laist: Attached you will find a copy of a letter from Ur. Knox and an affidavit concerning patent application Serial No. 178,352 covering the Method of Producing White Lead.- This file is self-explanatory and is being sent to complete your patent file. Mr. James W. Laist will not need a copy, since the original was sent to him direct. Very fcguly you: FOCtvlc end. N11313 PN1TC00008457 December 22nd, 1929 Mr. 1. 0. Case Manager of Midwest District International aneltlng and Eefinlng Co., 20 North hacker DrIt # Chicago, Illinois Dear Mr. Case:- attached please find two copies of the reTleed affidavit forwarded dlreat to this office by Pennle, Davie, Harrln and Edmonda on Decsaber 19th. The affidavit has been completed as re quested and, In order to avoid delay, It has been forwarded direct by air sail to Mr. Janas V. talst. Mr. La1st requested that it be returned in time for filing before the end of the year. Very truly yours TJX/an end. Shite Lead Plant Superintendent N11313.01 PNYC00008^58