The AAP reported monthly sales data for September and October of 2013, showing modest gains versus a year ago when you combine the two months. Total sales first showed year-over-year gains in August, after 10 consecutive months of flat or declining numbers. September trade sales gained 7.5 percent, up $47.5 million, with increases in nearly all tracked sub-categories, to $665 million for the month. In part, however, fall titles shipped earlier in 2013 without the presidential election to steer around. Which may be why the October numbers show a slight decline, down 1.5 percent (or $11 million) at $664.5 million […]