Source Unknown Vintage Penneys Nation-Wide Double Bed Flat Sheet Strong Muslin 81x108 Cotton‎

Brand: Penney's Line: Nation-Wide Strong Muslin Sheet with penguin logo. Item: Vintage flat bed sheet for a standard double bed. Material: 100% cotton strong muslin; finished thread count averages 133 per inch square in a well-balanced, long-wearing weave. Size on package: Double bed, 81 x 108 inches (size before hemming). Color: White (per appearance through package). Package text highlights: firmly woven of carefully selected long staple American cotton, well-balanced weave, smooth texture, tape selvages to reinforce edges, neat hems with tiny even stitches, and negligible shrinkage (almost none in width, less than 6% in length). Back of package includes laundering suggestions and a buying guide for sheet sizes; code on package reads NW 26. Sheet appears to be new old stock, still factory folded inside original plastic wrap.