New SF Observer Header

I used the following images, courtesy of Science Fiction Paperback Covers, for the new header of the Science Fiction Observer:

• The Moon Pool by Abraham Merritt ($)
• City by Clifford D. Simak ($)
• The Princess of the Atom by Ray Cummings ($)
• Rogue Queen by L. Sprague de Camp ($)
• I, Robot by Isaac Asimov ($)
  
• The Man Who Japed by Philip K. Dick ($)
• Saturday Evening Post Fantasy Stories ($)
• 1984 by George Orwell ($)