Determination of the sequence of writing on both sides of a paper

One of the most difficult subjects the Examiner of Questioned Documents had to deal with is the determination of the sequence of written materials. As far as this author knows, techniques are available only for cases where the relevant writings are placed on the same side of the paper. Numerous experiments have been made on a range of papers varying in weight. In all of these tests both sides of the paper were typewritten as well as handwritten (pencil, pen, ball-point pen and fountain pen). Several samples are shown where the possibility of such determination is seen to be feasible, especially in cases where both sides are typewritten and where one is typewritten and the other is handwritten with pencil, ball-point pen and fountain pen.