Drow are mentioned in Keightley's The Fairy Mythology, as I recall (it might have been The Secret Commonwealth [of Elves..., by Kirk]--neither book is before me, and it is not all that important anyway), and as dark elves of evil nature, they served as an ideal basis for the creation of a unique new mythos designed especially for the AD&D game. [Supposedly from "Books Are Books, Games Are Games" in Dragon #31.]So I looked at both -- Keightley online via Google Books, and Kirk in the 1933 edition at the NYPL although I later discovered it is also online. It's in neither (well it is once in Keightley, as a verb). The nice thing about the online sources is, you can search both via Google (Google Books or Google with the URL for the Kirk).
The searches:
What does appear is trow in Keightly, but they are little green-clothed Shakespearean fairies: they are "of a diminutive stature" and "are usually dressed in gay green garments" (p. 165).
According to the Wikipedia page on Drow (the D&D version), Gygax later corrected his source. But the uncorrected quote was what I ran into a lot initially. This isn't an "interent good, internet bad" story, it's more a story about people (Gygax misremembering, people putting up quotes and then never noticing corrections....).
Sadly, I can't verify the Dragon quote by Gygax.
