1. An essay on the Ground Nut, arachis hypogea manubi sive mondubi, as an article from which a palatable and wholesome oil can be extracted. Date: 1809-06-17 and 1809-06-17
2. Letter from N[athan] and D[avid] Sellers (brothers) to Henry Laurens, Jr. Date: 1802-07-23 and 1802-07-23
4. The Results of an experiment made to extract an [Experimental] oil from Cotton Seed Date: 1800-10 and 1800-10