Gene Colan was a longtime comic book pro, and especially popular during his time with Marvel Comics on titles like Tomb Of Dracula, among several others. Colan came into the field as a young artist right after World War II, and worked for both DC and Timely/Atlas/Marvel before settling in during the sixties for a long run at Marvel. The stories I have today, from pre-Code issues of Marvel Tales (1953-55) show that his distinctive style was present even before he drew superheroes like Daredevil or Batman.
Colan died at age 84 in 2011. “When a World Went Mad” is from Marvel Tales #118, “Vampires Also Die” is from #127. and “While Death Waits” appeared in #131.