Kingsley Amis (1922-1995) wrote in 1960 i think is the first serious essay on the world of science fiction,ovously it is outdated but yet it contains some gems.
The book beguins with the primitive history with the names between others more anciet of Jules Verne,H.G. Wells and Edgar Rice Haggard and more, then follows with the less serious writes in pulp magazines and finally when the sf became a mature and serious genre of mass diffusion ,the autor focusses more on the sociological and political aspects and sees the genre in its distopic novels and tales as a critic ,satire or warning for the human society,here appears names as James Blish,Ray Bradbury,Arthur Clarke,Robert Sheckley,Frederick Pohl,Van Vogt,Clifford Simak,L.Sprague de Camps,Kornbluth ,Brian Aldiss and others.
Then makes a length discussion on the works THe Space Merchants,The Midas Plague and Farenheith 451 but makes alusión to other many Works as: Silent Brother by Algis Budris,World Withut Men by Charles Eric Maine,Consider Her Ways by John Wynham,,Unhuman Sacrifice by Katherine MacLean,The Helping Hand by Poul Anderson,Drop Dead by Clifford Simak,The Demolished Man BY Alfred Bester,Nineteen Eighty Four by George Orwell,The Academy by Robert Sheckley,What to do till the Analist comes by Pohl where satirices the use of tranquilicers,Pictures Dont Lie by Katherine MacLean,The Tunel Under the World by Pohl,the classic Looking Backward by Edward Bellamy,the utopics Works by Bulwer Lytton,Samuel Buttler,W.H. Hudson,Willian Morris,Dean Howells and many others
I would rate it 4.5