Oct 26, 2012. /Lesprom Network/. U.S. total printing-writing paper shipments decreased 7% in September 2012 compared to September 2011. All four major printing-writing grades posted decreases compared to the previous period. The decrease in shipments followed the drop in U.S. purchases of printing-writing papers by 10% compared to September 2011, as the American Forest & Paper Association said in the press release received by Lesprom Network. The American Forest & Paper Association is the national trade association of the forest products industry, representing pulp, paper, packaging and wood products manufacturers, and forest landowners.