A black and white photo of a slab with ripple marks. An upclose view of a slab that has ripple marks. A small ruler and an awl are on top of it.
black and white photograph
Digitized by Forsyth Digital Collections
Copyright University Archives, Fort Hays State University
Sternberg, George Fryer 1883-1969, "089-03: A Slab of Ripple Marks" (2021). George Sternberg Album #2 - Early Canadian Views. 359.