A Note on White Erasers

I am not an expert on restoration of old documents, but I do know that white erasers can be used carefully to remove atmospheric dirt and dust, and sometimes darker marks.  The trick to not damage the document is to do very light strokes.  You do not want to put stress on the surface of the paper.

Here is an example of a mark I was able to almost entirely remove by just using a white eraser.

You might notice the image on the right is generally more clean of imperfections.  I used the eraser to lightly clean the surface of the lithograph.