W.F Cannon
![Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30'x60' quadrangles, Wisconsin and Michigan / W.F. Cannon [and others]](https://s3.amazonaws.com/readfeedstatic/book_covers/thumbnails/rf-placeholder.png)
Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30'x60' quadrangles, Wisconsin and Michigan / W.F. Cannon [and others]- Geologic map of the Keweenaw Peninsula and adjacent area Michigan / by William Cannon and Suzanne W. Nicholson
- Preliminary digital geologic map of the Penokean (Early Proterozoic) Continental Margin in northern Michigan and Wisconsin / by W.F. Cannon and D. Ottke