none of the run of six 1965 cat# 1400-1405 erb reprints has a cover artist reported, nor image supplied, from the whole sf database #4 (bar 1401, which apparently reuses the earlier roy carnon art); and this is not mentioned in the publishing history of later printings by nel from 1973 on. this seems rather odd.
- does this exist, or was the printing scheduled, and then found to be unneeded?
- more information - from real live copies held in real live people's paws, please, bookcatters!