The object belongs in the Whitson Pencil Sharpener Archive. The image was taken in 2018 by Roy Behrens for the Richness of Design: The Elena Diane Curris Biennial Design Exhibition, October 8 - November 16, 2018, in the UNI Gallery of Art.
©2018 Roy R. Behrens
Behrens, Roy R., "[159 Image] Whitson Pencil Sharpener Artifacts, Green Base White and Black Diagram," (2018). Whitson Pencil Sharpener Artifacts. 158.