Here's some pictures of the Stedman. The banjo is based on the woodcut that appears in his [Stedman's] book, Narrative of a Five Years Expedition against the Revolted Negroes of Surinam. The banjo dates to the mid 1770's.
Overall length: 42"
Gourd: 14" X 9", 4 1/2" deep
Neck: Mahogany (no fingerboard)
3 long strings, 1 short