Interesting. I glanced at my DD and FF, and didn't see either PH or PHB... though neither is digital, so I can't search for certainty.
So I guess the answer is somewhere between May 1979, and Jan 1982? Assuming that TSR was internally consistent, which seems unlikely.
On an unrelated note, I was surprised to learn that Deities & Demigods refers to itself as "DDG."
So I guess the answer is somewhere between May 1979, and Jan 1982? Assuming that TSR was internally consistent, which seems unlikely.
On an unrelated note, I was surprised to learn that Deities & Demigods refers to itself as "DDG."