I know most of us have much more to do today than read about dinosaurs; however, I want to share a few papers on Dryptosaurus that you can read at your own leisure during this week dedicated to Dryptosaurus.
2011: Brusatte, Benson, and Norell; The Anatomy of Dryptosaurus aquilunguis (Dinosauria: Theropoda) and a Review of Its Tyrannosauroid Affinities
1877: Marsh; Notice of a new and Gigantic Dinosaur (Marsh's renaming of Dryptosaurus)
1866: Academy of Natural Sciences (Philadelphia); Proceedings of the Academy of Natural Sciences of Philadelphia (Initial description as presented by E.D. Cope of a new "gigantic extinct Dinosaur")
The two older sources are hosted by The Theropod Archives site, to which we typically owe the hosting of older documents.