Minnesota Historical Society Press · Univ Of Minnesota Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Minnesota Treasures: Stories Behind the State's Historic Places | 978-0-87351-471-2 (0-87351-471-8) | 2004 |
| Wood, Concrete, Stone, and Steel: Minnesota's Historic Bridges | 978-0-8166-4666-1 (0-8166-4666-X) | 2008 |
D. G. · D. Gardner · D. P. · Denis Gardner · P.G. · P. Gardner