I just wanted to let you know that a man by the name of Jacob Helb was a witness to my great-great-great grandfather's naturalization. The address for Mr. Helb was 596 11th Ave., NYC. The date of the document was 10/25/1892. The document is listed under the Index to Petitions for Naturalization filed in New York City, 1792-1989 record for Valentine Braun.
I don't if you have this information or if is useful but I wanted to let you know.