This volume, appearing only a couple months after Knight's Science Fiction Argosy, is clearly a fantasy counterpart to that book, though this volume isn't as along, nor does it declare the same ambition. Knight's introduction talks about "realms beyond our knowledge", and says "The stories in this book have been chosen because they gave me delicious glimpses into certain of these realms..."
“Are You Too Late Or Was I Too Early”,
John Collier
(New Yorker Apr 14 1951)
“Entire and Perfect Chrysolite”,
R. A. Lafferty
(Orbit 6, 1970)
“Jenny with Wings”,
Kate Wilhelm
(The Mile-Long Spaceship, 1963)
“The Truth About Pyecraft”,
H. G. Wells
(The Strand Apr 1903)
“The Words of Guru”,
C. M. Kornbluth
(Stirring Science Stories Jun 1941)
“Postpaid to Paradise”,
Robert Arthur
(Argosy Jun 15 1940)
“The White People”,
Arthur Machen
(Weirdly Supernatural #1 2001)
“Captain Stormfield's Visit to Heaven” (extract),
Mark Twain
(Harper's Dec 1907-Jan )