Butterick 3960 vintage sewing pattern, dated ca 1975.

Misses' Nightgown and Pajamas:

Loose-fitting nightgown in two lengths and pajama top gathered into self or contrast shaped front and back yokes, have jewel neckline and full length sleeves gathered at caps with elasticized wrists forming self ruffles; front yoke is buttoned or has snap closing with button trim. Straight-legged pajama bottoms have elasticized waistline. Purchased lace or rick rack trim.

Size     MEDIUM 12 - 14:

Bust    34 - 36 inches / 87 - 92  cm

Waist  26 1/2 - 28  inches / 61 - 67 cm

Hip     36 - 38  inches / 92 - 97 cm

Pattern is partly cut and checked complete ( nightgown cut to longest length ). Envelope has some large tears around top half.

More '70s patterns here:

http://allthepreciousthings.com/collections/1970s