[78-L] Capital Series

[agp]

Is there any available research on variations of the Capital label? 
Not so much label style, but series, like Columbia Masterworks.

I know that there was a Capital Criterion series as well as the 
Capital Americana series -- with a red label in the 40000 number 
range. I also have a red label in that number series that doesn't say 
Americana -- 40114: Deck of Cards/ Rounded Up in Glory by Tex Ritter, 
but I assume that Capital kept the numbering a label colour and 
de-emphasised the series.

So, what was the purpose of this series and the Criterion series. 
What others were there in the 78 rpm era

Tony