The B series letter books, 1702-1786
This series contains original in-letters and drafts, or copies, of out-letters. The bulk consists of letters received from the American colonies, with a sizeable number of letters sent to the colonies. Some volumes relate mainly to a particular colony, but volumes 7-20 contain general correspondence, beginning in 1738, just after the A series ends, and continuing to 1753.
(Owing to the nature of the original binding of the letters and enclosures, neither the microfilms nor these images scanned from them necessarily show them in their strict sequence. Special care should thus be taken that dates and references are checked when noting individual documents for reference purposes.)