I'm asking specifically about corporations
, not governments or individuals, with a name and a public persona, that try to portray themselves as not merely good businesses, but acting "for the benefit of all mankind" or some such propaganda. But hiding a Secret Evil Agenda, not merely careless polluters or mistreating their workers or other stuff that any corporation might have done at the time the story was written.
The first I can think of is the N.I.C.E.
in That Hideous Strength
by C.S. Lewis in 1945. Are there earlier examples?