How were ward maps historically revised or updated?
Ward Map atlases, particularly those by the Bromley Company, were often updated using a paste-up method. The publisher issued sheets of paper with small maps of individual properties that had changed since a particular atlas had been published. The subscriber then cut out the updated properties and pasted then right into the atlas. The paste-up method saved resources, since a whole atlas could be used for many years and simply pasted-up when changes to properties occurred. An example of paste-up revisions can be seen in our midtown Manhattan atlas which was published in 1928 and has paste-ups through 1952.
