These can be found in numerous places - disguised, not-yet clear to themselves, couched in pre-conceptual terms or conceptual terms ready-to-hand but inappropriate. Debord himself quotes Feuerbach, and here, in 1925, we find Rilke using the name 'America' to try and delineate the contours of what was happening:
To our grandparents, a "house," a "well," a familiar steeple, even their own clothes, their cloak still meant infinitely more, were infinitely more intimate—almost everything a vessel in which they found something human already there, and added to its human store. Now there are intruding, from America, empty indifferent things, sham things, dummies of life . . . . A house, as the Americans understand it, an American apple or a winestock from over there, have nothing in common with the house, the fruit, the grape into which the hope and thoughtfulness of our forefathers had entered . . .
Rilke 1925 (See fn 15 and 16 of this article)