TO THE PRESIDENT OF CONGRESS Head Quarters, Head Quarters, Cambridge, March 19, 1776

SIR: It is with the greatest pleasure I inform you that on Sunday last the 17th. Instant, about gth O'Clock in the forenoon the Ministerial Army evacuated the Town of Boston, and that the Forces of the United Colonies are now in actual Possession thereof. I beg leave to congratulate you Sir, and the Honorable Congress on this happy event, and particularly as it was effected without endangering the Lives and property of the remaining unhappy Inhabitants.

I have great reason to imagine their flight was precipitated by the appearance of a Work which I had ordered to be thrown up last Saturday night, on an eminence at Dorchester, which lay nearest to Boston Neck called Newks Hill. The Town although it has suflered greatly, is not in so bad a state as I expected to find it, and I have a particular pleasure in being able to inform you Sir, that your House has received no damage worth mentioning, your furniture is in tolerable Order and the family pictures are all left entire and untouched. Captn. Cazneau takes charge of the whole until he receives further Orders from you.

As soon as the Ministerial Troops had quited the Town, I ordered a Thousand men (who had had the small pox) under command of General Putnam, to take possession of the Heights, which I shall fortify in such a manner, as to prevent their return, should they attempt it; but as they are still in the Harbour, I thought it not prudent to march off with the main body of the Army, until I should be fully satisfied they had quited the Coast. I have therefore only detached five Regiments besides the Rifle Battalion to New York, and shall keep the remainder here 'till all suspicion of their return ceases.

The situation in which I found their Works, evidently discovered that their retreat was made with the greatest precipitation. They have left their Barracks and other works of wood at Bunkers Hill &cat all standing, and have destroyed but a small part of their Lines. They have also left a number of fine pieces of Cannon, which they first spiked up, also a very large Iron Mortar; and (as I am informed) they have thrown another over the end of your WharfÑI have employed proper Persons to drill the Cannon, and doubt not I shall save the most of them.

I am not yet able to procure an exact List of all the Stores they have left. As soon as it can be done I shall take care to transmit it to you. From an estimate already made, by the Quarter Master General, of what he has discovered, they will amount to 25 or 35£

Part of the Powder mentioned in yours of the 6th Instant has already arrived; The remainder I have ordered to be stop'd on the Road as we shall have no occasion for it here. The Letter to General Thomas I immediately sent to him; he desired leave for three or four days to settle some of his private affairs after which he will set out for his Command in Canada. I am happy that my Conduct in intercepting Lord Dunmore's Letter is approved of by Congress. I am etc.