Stan,
My sister used my father's address as her permanent mailing address. Before she went missing she and I went to Terrell to have our DL's renewed together. I am guessing that was somewhere before Feb. 21, 1991, because that's my birthday and my DL had to be renewed prior to that date. Since she used my fathers address her car registration was also mailed to his address as well. These were items that came to my father's house as they became due because she used his address.
Thank you, because it sounded before like someone had taken the papers out of the car and mailed them. So really, it's of no significance.
Did you look at this unidentified person, found in Louisiana in 1994?
https://identifyus.org/en/cases/889