Reproduction apparatus is provided for producing signatures from electrical signals representive of the image content of a plurality of originals to be produced on receiver sheets. The reproduction apparatus includes a multi-image electronic memory having addressable regions for storing such electrical signals defining the image content of a plurality of originals in a first sequence of originals. The address information relating to the storage location of each original is stored in the memory. The stored electrical signals of individual originals are selectively retrieving from the memory in a scheduled order different from said first sequence such that reproduced images of the originals are located on respective sides of receiver sheets in regions such that multiple stacked receiver sheets can be folded between images and nested to form a collated booklet with the pages properly sequenced. A writer produces the original images onto receiver sheets in the order the control information is retrieved from the memory.