monster and item first appearences

...in all commercial iwads. Not zombies or imps (a bit obvious) and stimpacks etc, but all other monsters, invulnerability, invisibility, soul sphere, etc. I remember seeing a faq for doom 2 only that had first monster appearances, ages ago. Also, the official 6.666 faq seems to have nothing like this in it.

DMFAQ66B.TXT, starting at line 2185.

invictius: Please stop asking the same questions again and again, especially when you have already been directed towards the answer on previous occasions when you asked the same question.