Apr 22, 2011. /Lesprom Network/. U.S. printing-writing paper shipments increased 1% in March 2011 compared to March 2010. Two of the four major printing-writing grades posted increases compared to last March. U.S. purchases (shipments + imports – exports) of printing-writing papers decreased 2% in March. Total printing-writing paper inventory levels decreased 5% compared to February 2011, as the American Forest & Paper Association said in a press release received by Lesprom Network. The American Forest & Paper Association is the national trade association of the forest products industry, representing pulp, paper, and wood products manufacturers, and forest landowners.