Autograph Receipt Signed by Aaron Lopez for Elephant Teeth, Newport, Rhode Island, December 8, 1768 One-page autograph receipt signed by Aaron Lopez, a Jewish merchant in Newport, Rhode Island, for the purchase of "9 Elephants Teeth" from David Ross for the sum of £17/9/11. Dated December 8, 1768. The receipt shows evidence of having been torn from a larger book or sheet.