I have read a few books about fantasy by Lin Carter, and if I remember correctly one of them had a poem by Lin Carter based on the King in Yellow by Robert W. Chambers.
As most of you should know, The King in Yellow (1895) is a short story collection by Robert W. Chambers. Some of the stories mention a being called The King in Yellow and a fictional play titled The King in Yellow.
One story ("The Mask") quotes these lines from the play:
Camilla: You, sir, should unmask.
Cassilda: Indeed it's time. We have all laid aside disguise but you.
Stranger: I wear no mask.
Camilla: (Terrified, aside to Cassilda.) No mask? No mask!
And I remember that one of the lines in the Lin Carter poem I mentioned was something like:
Do not seek to know, nor ask,
what lies beneath the pallid mask.
And I have an idea for a story where a character is asked by members of another species to show their face and, knowing the others would be grossed out, and remembering the Lin Carter poem, replies:
Do not think to know, nor ask,
what is behind my gilded mask.
So I would like to know what book and chapter that poem can be found in.