Many THANX, Rob, but that is the one who I currently have as my great uncle. He's Lichtman-45 and I found his naturalization records (certificate of intent, application, and final citizenship granting) at familysearch. They're on his profile. I really thought he was my great-uncle until I found his parents' names on a record and discovered he's the wrong person.
"Conflated" is an order of magnitude too simple to describe this - there are at least a half dozen people with the identical name, all within about 5 years of same age, all from Hungary/Russia, and all living in New York City after coming to the United States. I'm determined to sort them out and, so far, have added profiles for 3 of them. There's a conflation notice I put at top of my (originally thought to be) great uncle, and will add conflation boxes linking them all to each other when I'm done adding them all.