Tilt-A-Whirl at the Minnesota State Fair, 1969. Photograph Collection, Minnesota State Fair Archives, Falcon Heights. Used with the permission of the Minnesota State Fair Archives.

Figure 1 of Herbert Sellner’s “Patent Application for Amusement Device,” filed with the US Patent Office on April 24, 1926. Sellner Patent Application for Amusement Device, Sheet 1, filed April 24, 1926. United States Patent and Trademark Office. Public domain.

Timber workers, potentially during strike 1930–1939.

The cover of the August 13, 1873, issue of Time magazine, featuring Minnesota Governor Wendell Anderson.