Open Mike: Are you certain I didn't already do an archive search before I asked my question? Lo and behold, I did, and didn't find any references to Carter Family picture sleeves.

I've been on enough online discussion forums to know there are people who don't care for questions being repeated over and over again (I'm not one of them---I just don't read them).

On the other hand, when questions are repeated, invariably new information comes out from other posters, such as we've seen here. To say nothing of the people to whom the question never occurred and nonetheless discovered they were interested in the answer.

But thanks for your attention!