I modeled the B17 from scratch using Blender 2.70a. I started off using a blueprint of the B17 found on Google. I then edited the image cutting out each view so I had 3 separate views of the plane for my background image. Then I began modeling the plane following Jonathan Williamson tips from the Course: "Introduction to Hard Surface Modeling in Blender." All my references came from Google images.
@jonathanwilliamson Thank you, I really enjoy your tutorials and exercises.