Ever since appearing in his first solo series in 1959, The Flash has graced the cover of some of the most striking comic book covers of all time. While many of the character's latter issues emphasize lightning bolts to convey The Flash's speed, many of the earliest versions depicted a whirlwind of flashy kinetic motion to communicate how fast the Scarlet Speedster really is.
Source：https://www.cbr.com/flash-dc-flashiest-best-comic-book-covers/
