These images, from "Brazil Builds" published in 1943 show an even earlier "Buttrefly" Roof. Its so amazing that here in Palm Springs we seem to have "invented" Mid-century Modernism...turns out Niemeyer was waaaay ahead of us...can't help but wonder how those early modernist buildings are faring these days. I was in Rio a few years ago and saw Corbu/Niemeyer's Ministry of Education. It still looks brand new.
PS: Thanks to the "Doug Hudson Lending Library" for "Brazil Builds.'