Conservation. Used typewriter campaign. The War Production Board (WPB) has launched a campaign to secure 600,000 used typewriters from business firms and private individuals. These machines are needed by the Army, Navy, Maritime Commission, Board of Economic Warfare, Lend-Lease and other government departments and agencies. John K. Stockham, Washington, D.C. insurance man, turns in one of his typewriters to the government. This is one of the first machines thus enlisted in the war effort