1List of Fossils Sent by George Croghan to the Earl of Shelburne and Benjamin Franklin, 7 February 1767 (Franklin Papers)
Printed in The Royal Society, Philosophical Transactions , LVII. Part i. For the Year 1767...
2To Benjamin Franklin from Thomas Wharton, 7 February 1767 (Franklin Papers)
ALS : American Philosophical Society This opportunity presenting via Falmouth —I embrace it to...