William Powell's Small Drafting Pen Image: Short Caption: William Powell used this small drafting pen while teaching courses on aeronautics at the Bessie Coleman Flying Club. Credit: National Air and Space Museum, Smithsonian Institution Accession Number: A20100224000Photo Number: NASM 2011-00616Full Size Image: Date: 2011Media Type: ArtifactRelated Images: William J. Powell Jr.Bessie ColemanWilliam Powell's Drafting PenWilliam Powell's Flight ComputerWilliam Powell's Slide RuleTopic: Technology & Innovation Read more about William Powell's Small Drafting Pen