Do you have National Auxiliary Publications Service (NAPS) documents?
Unfortunately, the Library never received the NAPS documents, only those issued from its predecessor with the ADI (American Document Institute) prefixes. For more information about ADI Reports and the Library's collection see https://www.loc.gov/rr/scitech/trs/trsadi.html.
On rare occasions, the home institution of the author(s) has the NAPS document (or a version of it) in the University Archives. If you know the institutional affiliation of the author, you could try contacting the University Archives to see if they have it.
