Tam Line the second, by British fantasy powerhouse Susan Cooper, illustrated by Warwick Hutton.
This retelling features a Margaret instead of a Janet, and doesn't really have much over the Yolen version. Hutton's watercolors are airy and translucent - not really to my taste, to be honest, except for a lovely forest glen. They made the whole story seem unsubstantial to me.
I like the font.... faint praise.