From McCall's:
Top, tunic and dresses (semi-fitted through bust) have collar, back pleated into self-lined yoke with forward shoulder seams, and front-fly button closing. B, C: Button tab, below-elbow sleeves. A, B, D: Narrow hem. A, D: Sleeve bands, shaped hemline. B, C, D: Chest pockets. C, D: Flaps. Rolled sleeves B, C and hemline B, D: Wrong side shows. E: Self-belt. B, D, E: Side slits. C, E: Stitched hem.