Showcase #4 – First appearance of Barry Allen

The Flash #110 – First appearance of Wally West, Weather Wizard

The Flash #117 – First appearance of Captain Boomerang.

The Flash #123

Green Lantern Vol. 2 #13

The Flash #131

The Flash #137

The Flash #148

The Flash #155

The Flash #275
The Flash #276
The Flash #277
The Flash #278
The Flash #279
The Flash #280
The Flash #281
The Flash #282
The Flash #283
The Flash #284

The Flash #300

Read Crisis on Infinite Earths here.

The Flash Vol. 2 #48
The Flash Vol. 2 #49
The Flash Vol. 2 #50

The Flash Vol. 2 #54

The Flash Vol. 2 #62
The Flash Vol. 2 #63
The Flash Vol. 2 #64
The Flash Vol. 2 #65

The Flash Vol. 2 #73
The Flash Vol. 2 #74
The Flash Vol. 2 #75
The Flash Vol. 2 #76
The Flash Vol. 2 #77
The Flash Vol. 2 #78
The Flash Vol. 2 #79

The Flash Vol. 2 #91

The Flash Vol. 2 #95
The Flash Vol. 2 #96
The Flash Vol. 2 #97
The Flash Vol. 2 #98
The Flash Vol. 2 #99
The Flash Vol. 2 #100

Read The Flash: Dead Heat here.

The Flash Vol. 2 #112
The Flash Vol. 2 #113
The Flash Vol. 2 #114
The Flash Vol. 2 #115
The Flash Vol. 2 #116
The Flash Vol. 2 #117
The Flash Vol. 2 #118

The Flash Vol. 2 #130
The Flash Vol. 2 #131
The Flash Vol. 2 #132
The Flash Vol. 2 #133
The Flash Vol. 2 #134

The Flash Vol. 2 #136
The Flash Vol. 2 #137
The Flash Vol. 2 #138
The Flash Vol. 2 #139
The Flash Vol. 2 #140
The Flash Vol. 2 #141
The Flash Vol. 2 #142
The Flash Vol. 2 #143
The Flash Vol. 2 #144
The Flash Vol. 2 #145
The Flash Vol. 2 #146
The Flash Vol. 2 #147
The Flash Vol. 2 #148
The Flash Vol. 2 #149
The Flash Vol. 2 #150

The Flash Vol. 2 #152
The Flash Vol. 2 #153
The Flash Vol. 2 #154
The Flash Vol. 2 #155
The Flash Vol. 2 #156
The Flash Vol. 2 #157
The Flash Vol. 2 #158
The Flash Vol. 2 #159

The Flash Vol. 2 #164
The Flash Vol. 2 #165
The Flash Vol. 2 #166
The Flash Vol. 2 #167
The Flash Vol. 2 #168
The Flash Vol. 2 #169

The Flash: Iron Heights #1 (2001)

The Flash Vol. 2 #182

The Flash Vol. 2 #184
The Flash Vol. 2 #185
The Flash Vol. 2 #186
The Flash Vol. 2 #187
The Flash Vol. 2 #188

The Flash Vol. 2 #192
The Flash Vol. 2 #193
The Flash Vol. 2 #194

The Flash Vol. 2 #197
The Flash Vol. 2 #198
The Flash Vol. 2 #199
The Flash Vol. 2 #200
The Flash Vol. 2 #201
The Flash Vol. 2 #202
The Flash Vol. 2 #203
The Flash Vol. 2 #204
The Flash Vol. 2 #205
The Flash Vol. 2 #206

The Flash Vol. 2 #214
The Flash Vol. 2 #215
The Flash Vol. 2 #216
The Flash Vol. 2 #217

The Flash Vol. 2 #220
The Flash Vol. 2 #221
The Flash Vol. 2 #222
The Flash Vol. 2 #223
The Flash Vol. 2 #224
The Flash Vol. 2 #225

The Flash: The Fastest Man Alive #1 (2006)
The Flash: The Fastest Man Alive #2
The Flash: The Fastest Man Alive #3
The Flash: The Fastest Man Alive #4
The Flash: The Fastest Man Alive #5
The Flash: The Fastest Man Alive #6
The Flash: The Fastest Man Alive #7
The Flash: The Fastest Man Alive #8
The Flash: The Fastest Man Alive #9
The Flash: The Fastest Man Alive #10
The Flash: The Fastest Man Alive #11
The Flash: The Fastest Man Alive #12
The Flash: The Fastest Man Alive #13

The Flash: Rebirth #1 (2009)
The Flash: Rebirth #2
The Flash: Rebirth #3
The Flash: Rebirth #4
The Flash: Rebirth #5
The Flash: Rebirth #6

The Flash Secret Files & Origins 2010 #1 (2010)

The Flash Vol. 3 #1 (2010)
The Flash Vol. 3 #2
The Flash Vol. 3 #3
The Flash Vol. 3 #4
The Flash Vol. 3 #5
The Flash Vol. 3 #6
The Flash Vol. 3 #7

Read Flashpoint here.

The Flash Vol. 4 #25

The Flash Vol. 4 #0

The Flash Vol. 4 #1 (2011)
The Flash Vol. 4 #2
The Flash Vol. 4 #3
The Flash Vol. 4 #4
The Flash Vol. 4 #5
The Flash Vol. 4 #6
The Flash Vol. 4 #7
The Flash Vol. 4 #8
The Flash Vol. 4 #9
The Flash Vol. 4 #10
The Flash Vol. 4 #11
The Flash Vol. 4 #12

The Flash Vol. 4 Annual #1 (2012)

The Flash Vol. 4 #13
The Flash Vol. 4 #14
The Flash Vol. 4 #15
The Flash Vol. 4 #16
The Flash Vol. 4 #17
The Flash Vol. 4 #18
The Flash Vol. 4 #19
The Flash Vol. 4 #20
The Flash Vol. 4 #21
The Flash Vol. 4 #22
The Flash Vol. 4 #23

The Flash Vol. 4 #23.2

The Flash Vol. 4 #24

The Flash Vol. 4 Annual #2

The Flash Vol. 4 #26
The Flash Vol. 4 #27
The Flash Vol. 4 #28
The Flash Vol. 4 #29

Read Forever Evil here.

The Flash Vol. 4 #30

The Flash Vol. 4 Annual #3

The Flash Vol. 4 #31
The Flash Vol. 4 #32
The Flash Vol. 4 #33
The Flash Vol. 4 #34

The Flash: Futures End #1 (2014)

The Flash Vol. 4 #35
The Flash Vol. 4 #36
The Flash Vol. 4 #37
The Flash Vol. 4 #38
The Flash Vol. 4 #39
The Flash Vol. 4 #40
The Flash Vol. 4 #41
The Flash Vol. 4 #42

The Flash Vol. 4 Annual #4

The Flash Vol. 4 #43
The Flash Vol. 4 #44
The Flash Vol. 4 #45
The Flash Vol. 4 #46
The Flash Vol. 4 #47
The Flash Vol. 4 #48
The Flash Vol. 4 #49
The Flash Vol. 4 #50
The Flash Vol. 4 #51
The Flash Vol. 4 #52

DC Universe: Rebirth #1 (2016)