Nice link, thanks. I feel foolish, I think I found that site the
other day but scanned it too fast and didn't see the information.

Actually I've found three brand new still wrapped 8-tracks at my
thrift stores recently.

Never a quad as far as I know. Just so I know how do you identify a
quad tape anyway.

I see 8-track tapes but many are so worn as to be useless. I should
go on an 8 track hunt. But with 100 or so brand new blanks I should
just make my own.