Abstract: A lay-flay book block having a lay-flat pre-converted print stock and a method of making a lay-flat book block are provided. The lay-flat book block includes a stack of pages, a cohesive and a graphic, text or image. Each page includes two sheets of the lay-flat pre-converted print stock that are folded along a centerline which divides the sheet into a first leaf and a second leaf. The fold along the centerline forms a spine. The spines on the plurality of sheets are disposed adjacent one another. The cohesive is configured to be dry during printing and adhere in response to pressure. The cohesive is disposed on a first cohesive face of the first leaf and a second cohesive face of the second leaf. The first cohesive face of one of the sheets is mated and adhered with the second cohesive face of another sheet. The graphic, text or image is printed on the first and second leaves and expands across the centerline.