The color data guide that preceeded the combined data guide (yes, I collect these things) has a better guide in the back pages for runnign a sink line for C-41 and E-6. as to keeping properties, replenishment rates, etc. Not as detailed as the Z- manuals, but in an easier to acces format.
As to "Betty's", mine have never been in the used ones, but I have made one a 'Laura' - one of my wife in the front yard holding under her chin a grey card in one hand, and a data guide open to the swatch page in the other. I shot off two rolls in the same light on the same film, and would process about 4" snipped off and loaded with each run of c-41 to do a bit of process control, and check how different home mixed formulae work.