Simplicity 5552 vintage sewing pattern; ©1964. 

Child's and Girl's Nightgown or Pajamas in Two Lengths:

Nightgown and top feature a yoke with a front button closing; garment gathers to yoke. V.'s 1, 2 have collars and long sleeves. Elastic casings form self ruffles, sleeves gather to yoke. V. 1 long nightgown has eyelet edging trim. V. 3 is sleeveless, trimmed with lace edging. V. 2 has daisy medallion trim. V. 2 long pants and V. 3 panties feature elastic casings. 

Girls Size 6:

Breast 24 inches / 61 cm

Waist  22 inches / 56 cm

Hip     26 inches / 66 cm

Pattern is unprinted (perforated with symbols), and is checked complete. Pattern envelope has age tanning and wear and tear around opening.

More children's patterns here:

http://allthepreciousthings.com/collections/baby-and-children