It depends on what kind of tape it is Kate. Is it pressure sensitive adhesive tape or something water soluble? I directed a grant project at the museum I previously worked at to do just this kind of activity to stabilize works on paper. Here is a link to the documentary we did for it, http://denisonmuseum.org/imls-conservation-project/. Please feel free to contact me if you would like to talk more in depth about the methods we employed.