Download the PSD
I'm crossing my fingers and hoping that the Channel Mixer and Levels layers should work fairly well for all similar images.
The topmost layer is the "Colour Fix" layer from the Handyman Method.
It's not quite finished. As the last step of all, I would recommending adding another blank layer, and using the Clone Tool (set to "Sample: Current and below") to tidy up a few little lines and specks here and there. Of course, it all takes time, so you'd need to decide how much time you can afford to spend.