The two Brother John Sellers albums had catalogue numbers 7022 and 8005. The first was folk blues, the second a mix of blues, folk and gospel tunes with a jazz backing, thus placed in the 8000 Jazz Showcase series.
Do not ask me why Bobby Henderson's second solo piano album was issued in the 9000 series, I have not heard it, and it cannot be found on discogs:
Call House Blues : Bobby Henderson (p) solos
New York, 1957
Diga diga doo
Vanguard VRS9017
Some of these days
-
St. Louis blues
-
A good man is hard to find
-
Alexander's ragtime band
-
There'll be some changes made
-
Three o'clock in the morning
-
Take me out to the ball game
-
Baby, won't you please come home ?
-
Call house blues
-
Take me to the land of jazz
-
Missouri waltz
-
After you've gone
-
Put on your old grey bonnet
-
Ballin' the Jack
-
That red sock is a nice detail. Maybe not "jazz" enough?
Just found this, maybe it's helpful: https://www.bsnpubs.com/new/vanguard.pdf