I've done this on paper, but not on glass. If you're just interested in a transparent substrate and not necessarily glass, I would suggest estar melinex - subbed polyester film base. (Available from photo formulary.) I use it as a temporary support when double-transferring carbon, and I've also used it as three single-transfer sheets of C, M and Y carbon that can be lined up and presented as one color piece (same as I've done with casein on multiple glass sheets).

-- Jorj