Virginia physician John Tennet's pamphlet The Poor Planter's Physician first appeared in 1734, and included details for effecting abortions. Benjamin Franklin found it to be so valuable that he copied it into his book The Instructor (1748).

Surely the pamphlet had appeared previous to 1734 as there's a copy labeled as the third edition which Benjamin Franklin had reprinted in 1734, which lists him as the publisher.