BearisGray, thank you for the hand-washing suggestion and that is really what I intended by my 'washing' comment. I use RetroClean on old linens, doilies, quilts, etc. and it works well on some stains.
I get you on the 'older' comment but this is a Loose Ends Project (
https://looseends.org) and I want to do the best I can.
Regards!