Duane was a prolific Hawaii ceramicist in the 1960s. His work is usually signed with a simple fish symbol (a symbol consisting of two intersecting arcs, the ends extending beyond the meeting point so as to resemble the profile of a fish). Most of Duane's pieces use brown, black, and white glazes portraying tikis or other native patterns. The same designs were often available in "flipped" glazes (i.e., white with brown and brown with white).