proposed mallets never built and SV/Uintah

Hi,

I have drawings four drawings (small resolution) of several proposed articulateds:

1) D&RGW 2-8-8-2 - proposed by - unknown
2) D&RGW 2-8-8-2 from two C28s - proposed by - unknown
3) RGs 2-8-8-2 - proposed by - Alco
4) ET&WNC 2-6-6-2 - proposed by - unknown
5) C&S 2-6-6-2 - no drawing but the text that goes with the drawing.

I would like to know who proposed these locomotives (Alco, Baldwin, etc).

I would like to find a proposal drawing for the C&S 2-6-6-2.

Does anyone know where I might find plans for the SV/Uintah 2-6-6-2s?

Were there and other articulated narrow gauge locos proposed for the US or North America?

I know of the CC&V 2' gauge 0-4-4-0 inside out framed loco. Anyone know of plans?

Thanks.

Doug vV