From Stretch & Sew:
This pattern designed exclusively for knit fabrics. ©1967 and 1974; Misses' and Women's Basic A-line Dress, dart-fitted, designed for knit and stretch fabric.
Recommended Fabrics: For best results, use a knit with 25% stretch.
Sizes: 8-10-12-14-16-18 (to fit bust 30-40") All sizes in one envelope.