Analysis of information sources in references of the Wikipedia article "Little Bunny Foo Foo" in English language version.
In any case, the earliest attestations I've been able to find are two from 1970. One is in Beverly Cleary's novel Runaway Ralph. The talking mouse Ralph finds himself at a summer camp, and is frightened to hear a boy singing 'Little Rabbit Fru-fru'. The other is from an article in the January 17 issue of The New Yorker, which mentions 'little Bunny Phoo Phoo' (spelled P-H-O-O) as a character in a children's story.
In any case, the earliest attestations I've been able to find are two from 1970. One is in Beverly Cleary's novel Runaway Ralph. The talking mouse Ralph finds himself at a summer camp, and is frightened to hear a boy singing 'Little Rabbit Fru-fru'. The other is from an article in the January 17 issue of The New Yorker, which mentions 'little Bunny Phoo Phoo' (spelled P-H-O-O) as a character in a children's story.
