Producing print streams for efficiently generating properly formatted and ordered paper cash letters comprises print stream file that includes electronic form definitions for each cash letter document. The cash letter documents can include a cover page, one or more bundles of substitute checks, a bundle summary for each substitute check bundle, and/or a cash letter bundle summary. Information from an electronic image cash letter file can be input in data fields of the electronic form definitions. Printing the information in the print stream file results in a properly formatted and ordered paper cash letter including substitute checks and audit data. Each substitute check can include all of the MICR data provided on a corresponding, original paper check. The audit data includes the cover page, bundle summary(ies), and/or cash letter bundle summary, which can each detail the documents printed concurrently therewith.