Image: A hand-drawn sketch of a plough. ‘Rough Sketch of the first single-furrow Stump-Jump Plough. Made at Kalkabury, Y.P. [Yorke Peninsula], 1876’. The sketch is signed ‘C.H. Smith’
Rough sketch of the first single furrow stump-jump plough made by Richard B. Smith at Kalkabury, Yorke Peninsula, 1876
Courtesy of/Photographer: 
Clarence Smith

Image courtesy of the State Library of South Australia, SLSA: B 64257,, Public Domain