[78-L] Youtube notice concerning original 1909 recording.

[bruce78rpm at comcast.net]

I just received a notice from Youtube concerning one of my videos, in which I play an original Edison 1909 Recording of Polk Miller and the Old South Quartette. 
Here is what part of the notice says "" Polk Miller & the old South Quartet - The Bonnie Blue Flag - 1909 Edison Recording ", may have content that is owned or licensed by IODA. 

This recording is 103 years old ! and the song goes back to the 1860's and the beginning of the Civil War. Is this claim possible ? 

Thanks for you help on this.