Vintage McCall's sewing pattern #3600 in size B, 8, 10, 12 for an Easy fit 2 piece dress.
Misses blouse and skirts, front buttoned long or short sleeve blouse has notched collar, front and back seaming, patch pockets and back pleat. top stitching and machine stitched hems.
Pull on flared skirt or straight skirt with back vent has elastic in waistline casings and side seam pockets.
Partially cut, all pieces appear to be included. package is a bit "lumpy", I ripped the side envelope putting them back in. but there are other side tears as well, envelope is still pretty much intact.