These two stories with time travel themes are drawn by Lou Cameron, a favorite fifties comic book artist. The first story, “Mission Into Time” (which begins with a date of 2014) is from Ace Comics’ Space Action #3 (1952, last issue), and the second, “I Was the First Future Man” is from DC’s My Greatest Adventure #24 (1958). You can see how Cameron developed as an artist in six years. (The stories are not very good, a problem with science fiction stories packed into six or seven pages.)
Cameron didn’t stay much longer in the comic book field. According to the Wikipedia entry on Lou Cameron, he wrote an estimated 300 novels, mostly in the Western genre, many of them under pen names. He created the popular Longarm series as well as the Renegade and Stringer series. Cameron died in November, 2010.