Abstract: Increased reliability is afforded with this simplified apparatus for assembling and transporting a loose stack of documents. The documents are stacked on edge upon a pair of pinch rolls, normally stationary. A back plate is provided for supporting the documents in a loose stack, and preferably a foot plate is included for reliability in accepting documents and in forming the stack. Documents from a plurality of asynchronous sources as well as a single source of documents are readily assembled in the desired stack, for example, with the use of a conventional tined stacking or loading mechanism. The apparatus is readily adaptive to operation by computer for determining the particular documents to be stacked and, upon completion of the stacking, for applying a driving force to the rolls for transporting the assembled loose stack of documents between the rolls to the desired destination.