Healing Salve
One lb. Lard, 1/2 lb. Resin, 1/2 lb. Sweet Elder bark. Simmer over a slow fire 4 hours, or until it forms a hard, brown salve. This is for the cure of cuts, bruises, boils, old sores and all like ailments. Spread on a cotton cloth and apply to the parts affected.
Source: One Thousand Secrets of Wise and Rich Men Revealed, C. A. Bogardus
For Felons
Take a portion of the bark of sweet elder, or hops will do; then put it with some sweet cream into a cup, and boil a short time;then put in a lump of saltpetre twice as large as a pear; let it slowly dry away to the consistency of a salve, which apply to the felon. The salt petre is the cure, but the elder bark and sweet cream aid in easing the pain. By putting in enough saltpetre, any felon can be cured in 48 hours, and the pain will cease almost immediately.
Source: 76: A Cook Book