The Citadel is an archive of information for George R.R. Martin's A Song of Ice and Fire.
New to the series? Read our spoiler-free review of A Game of Thrones.
"The Hedge Knight" is in my collection DREAMSONGS as well as the original Silverberg anthology LEGENDS.
"The Sworn Sword" is only in LEGENDS II.
Eventually I will collect the Dunk & Egg stories together and make a book (or two or three) out of them... but first I'll need to write and publish a bunch more of them.
The Westeros network consists of several different sites, including a forum and a wiki, for all your A Song of Ice and Fire needs.