Analysis of information sources in references of the Wikipedia article "David Hall (printer)" in English language version.
In February 1766 Franklin sold his share in the business to Hall.
In 1748 Franklin relinquished his active interest and David Hall, for four years in his employ, was made the active partner under the firm name of Franklin and Hall, Hall agreeing to pay Franklin £1000 for 18 years, which was equivalent to $2660 a year. David Hall was reared as a printer in Edinburgh and entered Franklin's employ in 1744.