Laid out in 1771 by the engineer John Montrésor. Heroically held by the Americans under British siege until they were forced out, Nov. 15, 1777. Rebuilt 1798-1800 according to L’Enfant’s design and enlarged in the 19th century. A U.S. military post . . . — — Map (db m12378) HM
Report from the Fort (during construction) 25 September 1794 . Pierre Charles L’Enfant, Engineer to Henry Knox, Secretary of War A place destitute of every comfort for the hands [workmen]; lay open to all accidents of the season . . . — — Map (db m12454) HM
Report from the Fort 21 January 1802 • Major J. J. Ulrich Rivardi Out of the fort is the hospital composed of three small rooms 12 feet by 25, it is a good wooden building, but too small. Another two-room wooden building and an . . . — — Map (db m12770) HM
Report from the British Side: Journal of Captain John Montresor November 10th: We expressed our batteries against Mud Island Fort, the whole consisting of two 12 pounders, six 24 pounders, guns and one 13 inch mortar for throwing pounder shot . . . — — Map (db m12447) HM
Main Gate Report from the Fort 21 January 1802 • Major J.J. Ulrich Rivardi I was speaking of the eastern Gate which is not finished yet, as I understand by General Irvine that the materials are paid for and which he has some time ago . . . — — Map (db m168469) HM
Report from the Fort 21 January 1802 • Major J. J. Ulrich Rivardi The bombproofs are six in number and well arched. No.1 - used as a guard house has two large bake ovens – its dimensions are 50 feet in length, 18 in width . . . — — Map (db m12759) HM
Cannon During the Revolutionary War armaments at Fort Mifflin were typical of those used at all colonial forts. Cannons were the largest weapons, but due to lack of materials in America, they were acquired from France or captured from the . . . — — Map (db m12783) HM
Quartermaster’s Store Report from the Fort 16 October 1844 • Major Brevet C. W. Thomas The Quartermaster’s Store at 55 feet in length by 20 in width, is nearly new and sufficient for all wants of the post. National . . . — — Map (db m12649) HM
Report from the Fort 21 January 1802 • Major J. J. Ulrich Rivardi One side of brick barracks, 117 feet long, 28 wide and very divided into seven rooms, five of which could accommodate 25 men…the other side is quite small and intended for . . . — — Map (db m12792) HM
Report from the Fort 31 October 1820 . Major Samuel Babcock, Engineer Quarters for officers 96 by 28 feet and two stories high built in 1814. Report from the Fort 16 October 1844 . Major Brevet C.W. Thomas The officers attached . . . — — Map (db m168583) HM
Report from the Fort 17 August 1867 • Lieutenant Colonel C. S. Stewart New Magazine – is now essentially completed and ready for use. During the year one third of the inner and main arches have been turned; the south wall built; the . . . — — Map (db m12597) HM
Report from the Fort 21 January 1802 • Major J. J. Ulrich Rivardi The second [new] part [of the fort walls] … has been added on the north and west side … These new works extend along the bank 1014 feet. They have a sally port . . . — — Map (db m12593) HM
Report from the Fort 21 January 1802 • Major J. J. Ulrich Rivardi The Blacksmith shop, a brick building, two fires, 20 feet by 19 – very good. In 1776 the Committee of Safety of the Delaware River ordered a “Smith Shop and Forge” to be . . . — — Map (db m192467) HM
Report from the Fort 30 September 1836 • Richard Delafield, Captain of Engineers [The] erection of a gun shed, for such artillery and carriages as shall not be mounted in battery … may not … be perfected this fall. National . . . — — Map (db m168468) HM
Citadel
Report from the War Office 16 January 1796 • Timothy Pickering, Secretary of War A fort, on Mud Island, is about half done, and a Citadel has been erected to complete the fort … Report from the Fort 21 January 1802 • . . . — — Map (db m12613) HM
Report from the Fort 20 May 1807 • Lieutenant Jonathan Williams, Inspector of Fortifications Casemate No. 11 is situated in the second redan [point] from the Gate and is in length 27 feet, in breadth 7 feet, in height 7 feet. . . . — — Map (db m12622) HM
Report from the Fort 4 December 1815 • Captain Samuel Babcock, Engineer I have the honor to enclose an estimate and plans of additions and repairs which I conceive necessary at Fort Mifflin. The Bombproofs which exist at present are in a . . . — — Map (db m168237) HM