Butterick 4019 vintage sewing pattern, dated circa 1940s.

Misses' Maternity Slacks Suit:

(A) The jacket of this maternity slacks suit is cut in mandarin manner; band neck, side closing, slit sleeves and opening at the side seams. The slacks have an adjustable waistline. (B) Boxy tailored jacket with collar, revers and patch pockets.

Size 16:

Bust   34 inches / 87 cm

Waist 28 inches / 71 cm

Hip    37 inches / 94 cm

Pattern is UNPRINTED, and has perforated symbols instead of markings. Instruction sheet is in original unused condition. Envelope has usual age tanning and edge wear, partial split at one side, flap is partially removed.

More '20s, 30's and '40s patterns here:

http://allthepreciousthings.com/collections/1940s