It seemed like they had a Halloween theme issue almost every year. This is from #31 from October/November, 1960.
I really like this one from #37, October/November, 1961.
1962's effort is from #43.
Six issues later came the 1963 Halloween issue.
1964's cover cracked me up.
1965's offering was from #61.
#67 was the last Halloween themed issue for a couple of years for unknown reasons.
The Halloween themed issues came back with the last issue of the series, #98 from 1971.
Hope you enjoy this great look at Halloween in the 60's, DC humor style.