Here is a Butterick Pattern # 3163 UNCUT Misses Pants and Skirt (with variations) in sizes 14, 16 and 18.
Misses' Skirt & Pants. Semi-fitted, slightly tapered skirt, below mid-knee, below mid-calf, slightly flared skirt, lower calf, tapered or straight legged pants have partially elastic waistband. D & E: pockets.
Fabrics: Lightweight broadcloth, faille, challis, and wool crepe.
The pattern and instructions are still factory folded with only the envelope showing a few store stamps and a little wear from storage and age.