1To Benjamin Franklin from Ingenhousz, 8 April 1783 (Franklin Papers)
...Mr. Wharton promish’d me to send me some boston soap such as you gave me a piece of,...soap...
2To Benjamin Franklin from Ingenhousz, 10 February 1784 (Franklin Papers)
or Soap lie, quick lime water, and Soap. Doctor Chitticks medecine was soap lie. ...Soap made up...