"Has Iceland proved that ghosts exist?"  From Ghost Stories, 1927.

"The realm of te supernatural has always interested me."  From Mystic Magazine, 1954.  

From The Supernatural by Douglas Hill and Pat Williams, 1965.

"The exploding windows of Springfield, Mass."  From Fate Magazine, 1959.

From Beyond Reality, No. 27.

"Why the supernatural sends most people into panic."  From Reality Magazine, 1938.

"Come with us to the dimension called ... Beyond Reality."  From Beyond Reality, No. 27.

"Supernatural phenomena: is there any natural explanation for them?"  From the Bombay Sunday Chronicle, 1939.

From Secrets of the Supernatural by Herbert Molloy Mason.

From The Supernatural by Lionel Alexander Weatherly, 1891.  (Via TheFugitiveSaint.)

"The mysteries of the supernatural come alive."  From Olivet Nazarene's 1966 yearbook.

Same.  From Dark Shadows, episode 342.

"We are made plutocrats of the supernatural. ... Others have money ... or power ... or strength and courage. ... We have gods and ghosts."  —Gene Wolfe, Lake of the Long Sun

A sense of the supernatural and the weird, bound up with a mysterious feeling of limitlessness and indefinitude that haunted him in his thoughts about this world and our earthly life.  The forms of another mysterious world, very near to this earth of ours, were seemingly present to his imagination.  From The Feeling for Nature in Scottish Poetry, Vol. 2, 1887.

"'What is that?' he demanded in a strange voice."  From The Wind in the Rose-bush and Other Stories of the Supernatural by Mary Eleanor Wilkins Freeman, 1903.

"That cold-blooded demon which we call Science is killing romance from amongst us.  Years ago everybody believed in the wonders of the invisible world, and ghosts were among the regular inhabitants of every rural district.  Now, we are so seldom suffered to see or hear of a ghost, that a visitation has the effect of novelty."  From Chambers's Journal, 1889.

The Voices of the Stars by James Edward Walker, 1894.

"Thus the horror and apprehension of a supernatural visitation terminated in a joyous wedding, which was consummated in the same chamber where the innocent Rosina had twice filled her lover with inexpressible alarm."  From "The Haunted Inn" in Ghost Stories, 1846.

Here's a marvelous explanation of the Irish "seven devils" as speculative superstition refracted by a mental prism into differently colored devils across the nations of the earth.  From Holland-Tide or Irish Popular Tales by Gerald Griffin, 1927.  Favorite phrases: "If one were disposed to be fancifully metaphysical upon the subject ..." -- yes, one would be so disposed!  Ireland as a "step-daughter" island.  And the zinger: "But what has this to do with the story?  In order to answer that question, the story must be told."