Sonora's father was born in June, so she chose to hold the first Father's Day celebration in Spokane, Washington on the 19th of June, 1910. President Calvin Coolidge, in 1924, supported the idea of a national Father's Day.
It's hard to define blues. On a literal angle, it's the dance you do to blues music, generally involving lots of improvisation, closeness, and hip movements. While swing and blues have basics, frames, and moves... blues doesn't.
Country blues, which is also known as folk blues, is a primarily an acoustic guitar-oriented type of blues from which many other styles are derived. It often incorporates elements of gospel, ragtime, hillbilly and Dixieland jazz.