Locations of certain places

[Galin]

Whatever happened, Christopher Tolkien explains...

'... and I have shown the little island of Himling off the far north-western coast, which appears on one of my father's sketch-maps and on my own first draft. Himling was the earlier form of Himring (...) and though the fact is nowhere referred to it is clear that Himring's top rose above the waters that covered drowned Beleriand. Some way to the west of it was a larger island named Tol Fuin, which must be the highest part of Taur-nu-Fuin.' Christopher Tolkien, Unfinished Tales

OTOH, CT naturally never regarded the 1954 Map as precisely canonical, since his father didn't draw it: it was a copy of his father's, which would be the Vulgate, and presumptively more 'correct' than CT's rendition.

Good point.