Maria,

I could give you a couple of suggestions but am not quite sure how "pure" you are trying to stay.

Are you interested in fixing what is there and simply apply an authentic "finish" or do you want to restore it to original?

For example 1910 residential homes did not use metal lath. So if you are willing to go that route then you might as well use a modern binder over the paint (if it is sound) possiby a sanded lime basecoat and then use your venitian products over that.

As far as lime is concerned you should be able to use the type "S" lime available at home depot for the the base coat.

The problems with the type S lime is that it does not hold color very well (which is not important in a base coat) and many who are inexperenced with it experience cracking. The cracking can be overcome since the plaster in your 1910 home is lime plaster.

Thom