So what's the connection between the lovecraft and "The King in Yellow", and is the latter worth checking out if I'm into lovecraft?
Never read about a king in yellow. There's the yellow sign which is tied to the deity Hastur. Sorry for not helping
To answer your second question, yes, it's worth checking.
>>9412016
I haven't read any of Chambers' stuff, but if you want to see some of what Lovecraft thought of him you can check out Lovecraft's essay "Supernatural Horror in Literature":
http://www.hplovecraft.com/writings/texts/essays/shil.aspx
It's pretty long, but you can search for "Chambers" in the text if you want. And the whole thing is an interesting read.
>>9412063
You fucked up.
>>9412016
The name Hastur is in both "The King in Yellow" and "The Whisperer in Darkness".
Derleth would later go on to flesh hastur out as a "Great Old One" from the lovecraft mythos, making "The Yellow King" an avatar of Hastur.
When I read "The King In Yellow" I had no idea it was connected to Lovecraft, but I haven't read any Lovecraft to be fair. That being said I'm relatively sure all of the short stories within it are connected to Hastur in some way, although he is never actually depicted to my knowledge. I enjoyed it when I read it, and I think if you're into Lovecraft you will as well.
Chambers is definitely worth reading, although be warned that only the first four stories in the book are pieces of weird fiction or reference the fictional book "The King in Yellow".
These stories are also rather vague. The whole "Hastur mythos" thing and its inclusion within the so-called "Cthulhu mythos" is an invention of post-Lovecraftian writers, including authors of the Call of Cthulhu RPG.
>>9412016