Back wrap apron in three lengths has strap and patch pockets; tie belt drawn thru left side seam opening, ties in front.
This pattern from the 1970s seems to be a promotional giveaway for McCall's multisized patterns. On the back of the envelope it says "We suggest you take this pattern to your favorite McCall dealer where you will find a wide selection of fine fashion fabrics."
It has been reissued (with different cover art) at least once.
Errata: The bust dart is not drafted correctly in the 1975 version of this pattern. One dart leg is wider than the other when the dart is folded along the fold line given, and the side seam does not align. You will need to true the dart.
Also, the side seam needs to be trued at the top. If sewn as given, you will not get a smooth curve to the side of the dress.
Finally, I believe the dart cannot be sewn as instructed, even after truing. The dart has a concave curve, and seems to be drafted as a French (cutaway) dart, but the instructions are to sew it as a regular dart. If you sew a concave curve at the dart tip, you will get a very pointy dart.