Fate: The Final Frontier: Flash-Related Series with Online Links: Part 1

Flash Comics (1940) 1-104 (The original, “Golden Age” Flash, Jay Garrick, debuted in the 1^st issue of this series & was featured all through it.)
http://www.comicvine.com/flash-comics-/37-116418/
http://www.comicvine.com/flash-comics/49-19438/

All-Flash (1941) 1-32
http://www.comicvine.com/all-flash/49-23194/

Showcase (1956) 4, 8, 13-14 (Barry Allen, the “Silver Age” Flash, debuted in #4 & #8, 13-14 featured the rest of his introduction.)

http://www.comicvine.com/showcase-mystery-of-the-human-thunderbolt-the-man-who-broke-the-time-barrier/37-2653/

http://www.comicvine.com/showcase/49-1770/

The Flash vol. 1 (1959) 105-350, Giant Annual 1 (This series picked up, in numbering, directly from the last issue of Flash Comics, but this volume featured the Barry Allen Flash.)

http://www.comicvine.com/the-flash/49-1995/

http://www.comicvine.com/giant-flash-annual/49-28177/

http://www.comicvine.com/the-flash-challenge-of-the-weather-wizard-meet-kid-flash/37-4625/ <-- the issue where the original Kid Flash, Wally West, debuts

Crisis on Infinite Earths (1985) 8 (This was the landmark issue where Barry Allen, as The Flash, sacrificed himself to save Earth-1 from the Anti-Monitor. It was his death in this major crossover event series that led to the first Kid Flash, Wally West, taking on the mantle of The Flash by the end of the story.)

http://www.comicvine.com/crisis-on-infinite-earths-a-flash-of-the-lightning/37-26031/

http://www.comicvine.com/crisis-on-infinite-earths/49-3441/

The Flash vol. 2 (1987) ½, 1-94, 0, 95-247, 1,000,000, Annual 1-13 (This volume featured Wally West as The Flash.)

http://www.comicvine.com/the-flash/49-3790/

http://www.comicvine.com/the-flash-annual/49-3791/

http://www.comicvine.com/the-flash-reckless-youth-part-1/37-39322/ ß this issue introduces Bart Allen, originally known as Impulse, later known as the 2^nd Kid Flash

Flash Special (1990) 1 (“50^th Anniversary Special”)

http://www.comicvine.com/flash-50th-anniversary-special/49-27655/

Impulse (1995) 1-89, 1,000,000, Annual 1-2

http://www.comicvine.com/impulse/49-5509/

http://www.comicvine.com/impulse-annual/49-33184/

Flash Plus (1997) 1 (with Nightwing)

http://www.comicvine.com/flash-plus/49-28597/

Impulse Plus (1997) 1 (with Gross-Out of Scare Tactics)

http://www.comicvine.com/impulse-plus/49-28598/

Green Lantern/Flash: Faster Friends (1997) 1 Flash/Green Lantern: Faster Friends (1997) 2

http://www.comicvine.com/green-lantern-flash-faster-friends/49-5952/

The Flash Secret Files (1997) 1 (1997), 2 (1999), 3 (2001)