Chris,
I like that layout. It makes it simple to read and understand. Simple is good.
As it's been noted before, the different plants had different coding. I'm hoping that we will be able to collect enough data, as time goes by, to be able to decipher all tags for '64-'66.
John has some good ideas for the registry as well. It will just need to be determined about the $ involved to make things happen.
All good ideas,
Thanks , Loren