Simplicity 8170, published in 1977. I hesitate to call it vintage, since I was "published" in 1977, but there it is. Anyway the pattern includes a robe, long sleeved nightgown, short sleeved PJ top and one seam PJ pants. I made the PJ set, but with the long sleeves from the nightgown.
I got these fuzzy jammies done, just in time, since this is what our house looked like in the morning.