Lonnie Johnson - Groove 5003 / Dr. Clayton - Groove 5006 (1942 / 1946)

Looks like RCA's 1950's Groove 5000 series only lasted eight issues.

Here's two of 'em.

Lonnie Johnson g, v / Blind John Davis p / Andrew Harris sb.

Recorded in Chicago on February 13, 1942.

Peter Clayton v / Blind John Davis p / Alfred Elkins imitation sb / Ransom Knowling sb.

Recorded in Chicago on March 27, 1942.

Peter Clayton v / Blind John Davis p / Willie Lacey g / Ransom Knowling sb.

Recorded in Chicago on August 7, 1946

Big Bill Broonzy - Mercury 8271 (1951)

Big Bill Broonzy g, v / Bob Call p / Ransom Knowling b.

Recorded in Chicago on November 8, 1951.

Tommy McClennan - Bluebird 34-0716 (1942)

Here's gravelly voiced Mississippi blues musician, Tommy McClennan. He frequently played with fellow Yazoo City born, Robert Petway.

McClennan was with Bluebird from 1939-1942 but this record was released in 1944.

Tommy McClennan g, v / Ransom Knowling sb.

Recorded in Chicago on February 20, 1042.

Arthur "Big Boy" Crudup - Bluebird 9019 (1942)

As is usually the case, by the time I find a blues record, all the music has been squeezed out of it.

From wikipedia…

Arthur "Big Boy" Crudup (August 24, 1905 – March 28, 1974) was an American Delta blues singer, songwriter and guitarist. He is best known outside blues circles for writing songs such as "That's All Right" (1946), "My Baby Left Me" and "So Glad You're Mine", later covered by Elvis Presley and dozens of other artists.

Arthur Crudup was born in Forest, Mississippi, United States. For a time he lived and worked throughout the South and Midwest as a migrant worker. He and his family returned to Mississippi in 1926. He sang gospel, then began his career as a blues singer around Clarksdale, Mississippi. As a member of the Harmonizing Four, he visited Chicago in 1939. Crudup stayed in Chicago to work as a solo musician, but barely made a living as a street singer. Record producer Lester Melrose allegedly found him while he was living in a packing crate, introduced him to Tampa Red and signed him to a recording contract with RCA Victor's Bluebird label…

Arthur Crudup v, eg / Ransom Knowling sb.

Recorded in Chicago on April 15, 1942.