The annual publishing convention and trade show, a decades-old tradition, may be coming to an end. ReedPop, which has managed BookExpo for a quarter century, announced Tuesday that it was dropping the event, along with the fan-based BookCon. (AP Photo/Mark Lennihan, File)NEW YORK – The annual publishing convention and trade show known as BookExpo, a decades-old tradition where guest speakers have ranged from Bill Clinton to Margaret Atwood, may be coming to an end. “Among the many traditions we greatly missed this year was having an industry event that brings together booksellers, authors and publishers," he said. "ABA is exploring new ways to bring booksellers, publishers, and authors together in the future.