Oh yes, I remember now what I have read somewhere. That mounting putty stuff;we call it blue sticky stuff in our house-great for putting up posters,kids school work etc. No valuable papers of course at it sometimes leaves a residue/mark on the paper. I get Lepage's Fun-Tak;available in office supply, stationary dpts.,big drug/grocery stores. There are different brands/colours out there, some better than others. We go through this stuff lots in our house. It is very easily removed from wall and paper. Bye for now.