lot vintage natural cotton string rug thread, carpet warp weaving cord yarn

Lot of vintage cotton rug warp (a string-like yarn, probably Maysville?), in 4" tall primitive style spools - fourteen spools in this lot, most full spools but some partial spools.

This has all been stored away for many years, and the outer wraps are discolored and dusty. The thread is very strong and supple, though.