This wonderful image from the Ken Brown Collection is entitled Witch Cauldron. The vintage image was originally copyrighted in 1912 by John Winsch. The young sorceress is joined in her steam by the ghosties and ghoulies and beasties and goblins alike. The sentiment reads:
In the firelight's gleam, by the moon's pale light, in the cauldron's steam on Hallowe'en night, all the ghosts and gobelins greet your sight!
Although this fantastic 5 by 7 inch card is blank inside, you can easily change it to a Greeted Card by adding a rubber-stamped Hallowe'en greeting inside. Of course, an envelope is included.