My "Essential Reading in Science Fiction" to be free on Amazon

Some advance notice that my “Essential Reading in Science Fiction” (also on Kindle Unlimited) collection of science fiction short stories will be free on Amazon for three days 4/5/6 March: http://www.amazon.com/dp/B007KMDW9M Here’s an excerpt from the book published on the Bewildering Stories site: http://www.bewilderingstories.com/iss...