Are the steps to painting a plaster and lathe walls, house is early 1900's, the same as any other type of wall? What type of primer should be used? What type of paint? On the internet I read about the walls need to breathe and latex may prevent 'breathing' and moisture will build up.
On a home this old there will be layers of oil based paint and possibly additional layers of Latex paint. The biggest concern is good prep work (cleaning removing loose material) and a Quality paint. I have used both oil and latex on Victorian era homes with excellent results. It is really an opinion question today.