Beginning with The Road to Science Fiction: From Gilgamesh to Wells in 1977, James Gunn produced a total of six volumes of what are designed to be teaching anthologies, collections of stories presented in more-or-less chronological order, and couched by long introductions placing each story in its historical context, as well as reviewing the author's career and their significance in the field.
That first volume (which will be compiled here later) included an appendix, "A Basic Science-Fiction Library", that is still maintained here. This second volume ends with a Chronology of significant SF novels and stories. The third volumes includes an extensive index of the first three volumes.
“The New Accelerator”,
H. G. Wells
(The Strand Dec 1901)
“The Machine Stops”,
E. M. Forster
(Oxford and Cambridge Review Nov 1909)