Dear Mildred;
To my mind, plaster walls are a real treat. They are smooth and cool, and a delight to decorate. Rather than covering the plaster up with drywall, I suggest you repair the cracks and even apply a skim coat of plaster over the walls. In an older house slight imperfections don't necessarily matter, and can add to the character of the home. You may choose to cover your walls with embossed wallpaper, which will hide small bumps and cracks.
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