Some of these look familiar (including a Black Watch variant). They're all too lightweight for good kilting, but folks are often asking about fabric for other uses so I thought I'd share this link. Supplier is a fine tailoring establishment in the Los Angeles garment district. BTW they also carry the heavyweight Hymo that IIRC Barb T has blessed as a Tailor's Pride equivalent, and bow tie hardware (hidden under Tuxedo Supplies).

Their tartans