1To Benjamin Franklin from William Shippen, Junior, 14 May 1767 (Franklin Papers)
ALS : American Philosophical Society I take the Liberty to send to the Royal Society a small Box containing A very extraordinary Lusus Naturae, two female children joind firmly together from the breast bone as low as the navel, having therefore but one body; in every other respect, as well internal as external, two compleat children. I enclose an exact account of the appearance on dissection...
2To Benjamin Franklin from William Shippen, Junior, 15 November 1767 (Franklin Papers)
ALS : American Philosophical Society I now have the pleasure of enclosing a short account of the appearances on the dissection of that curious production, which I had the honor of sending to the royal society last summer; should have done so long agoe had I not unfortunately mislaid my notes which I did not find till last week. I pray you will show it first to my learned friend Dr. Pringle who...