The Statures of Elves and Men: Changes

[Galin]

Just to add to Tar-Elenion's work here, something 'newer' revealed by Hammond and Scull...

'The Quendi were in origin a tall people. The Eldar (...) they were in general the stronger and taller members of the Elvish folk at that time. In Eldarin tradition it was said that even their women were seldom less than six feet in height; their full-grown elfmen no less than six and a half feet, while some of the great kings and leaders were taller.'

JRRT, late manuscript, The Lord of the Rings Reader's Companion, Hammond and scull, p. 107

The Numenoreans...

'... the Numenoreans before the Downfall were a people of great stature and strength, the Kings of men; their full grown men were commonly seven feet tall, especially in the royal and noble houses. In the North where men of other kinds were fewer and their race remained purer this stature remained more frequent, though in both Arnor and Gondor apart from mixture of race the Numenoreans showed a dwindling of height and of longevity in Middle-earth that became more marked as the Third Age passed. Aragorn, direct descendant of Elendil and his son Isildur, both of whom had been seven feet tall, must nonetheless have been a very tall man…, probably at least 6 ft. 6; and Boromir, of high Númenorean lineage, not much shorter (say 6 ft. 4).'

The problem is, I've no idea if these notes published by Hammond and Scull are earlier or later than the late statement from Of Dwarves And Men (in which the Eldar seem generally taller); and I'm not sure, so far, if there's any way to tell.