If you go to google.com type in NARA-AAD-List of Series.
When you get on that site. In the box that says Series and Files hit on the first Search. Another page will come up and it has search hit on the first one. Then a page will come up that has a place for serial number,name and residence. Just type in John Mc Hugo. Then hit on search. I had to put the space between the c and H. If you run his last name all together his information doesn't come up' Hope this isn't confusing.