The June 15 Study edition talks about scrolls, we all know the silly picture of the dude hauling scrolls around that the WT has put into a few of their publications. This paragraph in the new WT states:
The well-known Dead Sea Scroll of Isaiah is almost 24 feet (7.3 m) in length. With a rod at each end and often with a cover for protection, a scroll would be heavy. Probably most Christians could not carry many with them for preaching. Even if Paul possessed some scrolls of the Scriptures for his personal use, he likely could not take on his travels all the scrolls he owned. Evidently he left some with his friend Carpus in Troas.