How Long Blues was recorded by Daisy Martin in 1921; Ida Cox/Papa Charlie Jackson in 1925 as "How Long, Papa, How Long?"

Three versions were recorded in 1928: Tampa Red's Hokum Jazz Band's, Gladys Bentley's and Leroy Carr and Scrapper Blackwell's.

So did Carr really write it?

How about T for Texas? Did Jimme Rodgers really write that?
Or did Jimmie Rodgers write in the Jailhouse Now or Muleskinner Blues (Two other non-standard blues type songs)?

How about "Baby Please Don't Go." Who wrote that? Is the author the first guy to record the song? I know many blues were written but many more were stolen and claimed (just as folk songs were).

So how do you find out?

Richie