The Alice adaptation was reprinted in the inaugural issue of a new Dell title called Dell Junior Treasury. This series printed classic children's stories, of which Disney's Alice was the first. In fact, the Alice issue is the only Disney title in that series.
This is an incredibly difficult issue to find, more so in high grade because the cover is a very heavy high gloss stock. While the print run of the FC 331 was over 3M copies, I'm pretty sure this issue did not come close to that circulation, although I have no idea what it was. Relative to the rest of the issues in the DJT series it was probably the highest print run, but I can't imagine it was anywhere near 3M copies.
If you want to see the entire contents of this issue,