I have employed a Mr. William Bergholz, a civil engineer from South Carolina, as an agent to obtain information in the heartland of the Confederacy. His wife Mary has informed me he has had the misfortune to be arrested by U.S. troops. I have ordered his release and wrote her,
New-York, Nov. 20th 1864
Mrs. May M. Bergholz,
I have just learned from Gen. Dix that your husband has been released and sent to City Point to see me. I at once telegraphed to the Provost Marshal at Baltim[ore] to stop him if it was not to late and to say to him that I would be in Washington on Tuesday. I fear however my dispatch will reach Baltimore too late to intercept him.
I arrived here with my family last night. Will remain until 2
P. M. to-morrow. So many persons are calling to see me that I can not get out. If you will call at the Astor House, Parlor and send your name to my room I will be glad to see you. Gen. Dix was not aware of the arrest of your husband until he received my letter. Do you not see now that I have been able to befriend you? It afforded me great pleasure though I was sorry you should need friendly aid. I am satisfied there was no reason why Mr. B. should be arrested.
U. S. Grant
The Papers of Ulysses S Grant, Vol 13, p 15