Englishtown [ New Jersey ] June 30, 1778 . Orders Du Portail to Philadelphia to study city’s defenses. Df , in writing of H, George Washington Papers, Library of Congress.
White Plains [ New York ] August 27, 1778 . Instructs Du Portail to examine fortifications of Highlands and to execute instructions given him relative to the plan for defense of Delaware River and Philadelphia. Df , in writing of H, George Washington Papers, Library of Congress.
3George Washington to Brigadier General Louis Le Beque Du Portail, 31 October 1778 (Hamilton Papers)
Fredericksburg [ New York ] October 31, 1778 . Acknowledges receipt of plan for fortification of Boston. Has forwarded this information to Major General Horatio Gates who will take command at Boston. Df , in writing of H, George Washington Papers, Library of Congress.
4George Washington to Brigadier General Louis Le Beque Du Portail, 24 November 1778 (Hamilton Papers)
[ Fredericksburg, New York ] November 24, 1778 . Instructs Du Portail to send request for cannon for West Point to Congress. Df , in writing of H, George Washington Papers, Library of Congress.
Middlebrook [ New Jersey ] April 9, 1779 . Asks Du Portail to send an engineer to Wyoming, Pennsylvania. Df , in writing of H, George Washington Papers, Library of Congress.
Middlebrook [ New Jersey ] April 17, 1779 . Is pleased that Supreme Executive Council of Pennsylvania has approved Du Portail’s plans. Df , in writing of H, George Washington Papers, Library of Congress.
West Point, July 27, 1779. Discusses appointment of officers in Company of Sappers and Miners. Df , in writing of H, George Washington Papers, Library of Congress.
8George Washington to Brigadier General Louis Le Bèque Du Portail, 22 September 1779 (Hamilton Papers)
West Point, September 22, 1779. Instructs Du Portail to build barracks in the “different works.” Df , in writing of H, George Washington Papers, Library of Congress.
9George Washington to Brigadier General Louis Le Bèque Du Portail and Lieutenant Colonel Alexander Hamilton, 10 October … (Hamilton Papers)
The only material intelligence which I have obtained from New York or respecting the Enemy since your departure, is contained in the inclosed account, which I received yesterday from Captain Monroe. This in your communications with His Excellency Count D’Estaing, you will be pleased to shew him. As we shall have occasion for a great many boats, in case a cooperation between the Count & us...
10George Washington to Brigadier General Louis Le Bèque Du Portail and Lieutenant Colonel Alexander Hamilton, 18 October … (Hamilton Papers)
I have been favored with Colonel Hamilton’s letter, mentioning your arrival early on the 11th at Philadelphia; and your being about to set off for Lewis town the morning on which it was written. I have attentively considered the object to which you more particularly refer, and am now to authorize you, (provided the Count will not determine on a co-operation to the full extent of my...