HENRY LIEBENAU, Corresponding Secretary Constitutional Union Association to William H. Seward, September 23, 1867
Mr Liebenau to Mr. Seward
Honored Sir: I enclose with this the affidavit of Mr. and Mrs. Nagle, the parents of Colonel William J. Nagle, showing him to be a native of this State, and hope by the next mail to be able to place in your hands the naturalization papers of Colonel Warren; he was naturalized, as I now learn, in Boston, whither I have sent for the properly authenticated papers.
I greatly regret that, from an error in representation, I should have created a discrepancy in regard to the nativity of Colonel Warren, and I can assure you, like myself, the organization I represent will continue as earnest in their efforts to release our adopted citizens as they have been for the liberation of our native citizens, when unjustly arrested and held by any of the despotic governments of Europe.
Thanking you heartily and sincerely for the prompt attention and earnest action given to this matter by his Excellency the President and your honorable self, please accept my sincere regards, with the assurance of a faithful report to the “Constitutional Union Association” at their next meeting of the alacrity with which their communications have been responded to by the President and yourself.
With the highest respect, permit me to subscribe myself your very obedient and humble Servant,
Hon. William H. Seward, Secretary of State, U. S. A.