Medical moulages of farm accidents.

Although popular for displaying dermatologic conditions before the advent of photography, the medical moulage has also illustrated injuries and accidents. Explored here are three farm accidents and the moulages based on them that occurred in rural Minnesota in the early 20th century. Besides being an object of historical interest, the medical moulage also provides a valuable learning and training opportunity, and can even be thought of as the predecessor of three dimensional printing.