You're probably right: I don't recall the threads ever mentioning that Weatherly published it with the original tune, only that he first sang it on the radio that way (where it wasn't very successful), and published the reset version in 1913. Still, his papers must be enshrined somewhere, particularly anything relating to this song - can you imagine a lawyer who would fail to document anything he had rights to? And it's too juicy a tidbit to have escaped the attention of leave-no-semibreve-behind musicologists.