Well, it's that time of year again. Here's four rather nondescript reprints under a new Dick Giordano cover that's also not so hot. Note that since the regular title was now 25 cents, this "Giant" was 35 cents.
In the end, tough, we see what DC was plugging at the time. In spite of latter-day reports that they didn't care for his series and sabotaged his work, it's clear they were pushing him like crazy for quite a while!