Here There Be Dragonnes Book

The Ring's the thing...Thing was a young girl who hid beneath a mask. Her companions included a crow, a toad, a goldfish, and a kitten. Never had a more unlikely band of unheroic heroes set off on a difficult and dangerous quest. But Thing had a ring with unusual powers...Summer was an orphan who only wanted to find a husband and settle down. But first she had to help out a blind knight with amnesia and a winged pig. But how to get those two, as well as a raggle-tail assortment of other creatures in distress, to the far-distant place where they belonged? Summer owned almost nothing except a certain magic ring...Sophie was cast adrift in London by the untimely death of her parents. Then an uncle left her a legacy that would lift her up from poverty if she took a dragon's egg into uncharted Asia. The task was daunting and time was short, but her late uncle had also left her a very remarkable ring...Three very unusual heroines are in widely separated eras, each wearing for a time a ring made from a unicorn's horn, a ring with extraordinary powers.