The back of the envelope reads:  Misses' Top and Skirts:  Fitted, lined top has back zipper.  NOTE: No provisions provided for above waist adjustment.  Lined, gathered skirts have waistband, back zipper, and narrow hem.  C: gathered tie ends.  D: overskirt, raw edge finish.  E: shaped hemline, wrong side shows.  B, C, E: underlined.  

The envelope shows little shelf wear.   Contents were removed for the pictures only.  Tissue has never been unfolded.