From 1990; look at the end of the third paragraph in the second column, regarding Vault 12.
There are too many pages of this for me to want to scan and post, but Russ Cochran stated,
"Gaines has decided to keep four sets of each EC title for his family. All of the other copies will be sold".
At another point in the narrative, he said, "While Bob was ranking the copies of each issue, Anne and I applied labels to the outside of mylar sleeves."
The green colored pages displaying the issues for sale and their prices, along with copy numbers from the packages, listed zero issues available for VOH #'s 12, 13, & 14.