McCall's 7573 ©1981; "MISSES' JUMPSUIT: Long or short jumpsuit, pleated into front and back yokes, has shoulder straps buttoned to front; waistline casing and elastic are optional."
Although the pattern blurb calls this a jumpsuit, it's really overalls:)
Pattern is uncut and factory folds. Fits ~~ Size Petite, Size 6-8; Bust 30.5-31.5; Waist 23-24; Hip 32.5-33.5
Envelope in very good condition. Slight age-toning. Ink marks on front.