My Friend Harden,
I shall take it very kind if you'll Endeavour to Exchange one of your Prisoners for my Brother Woodbury Langdon Esqr who is now Prisoner at New York Ive wrote Governor Trumbull for his Assistance in this Matter Spare no pains nor expence and I will be Accountable to you for the Same I shall Acknowledge this favor with thanks and Gratitude pray don't fail me in some way or other — Your [&c.]
John Langdon
Portsm N.H. Septem 14th 1777
1. John Langdon Papers, HSP.