High-quality scans are taken of every page of every document in the archive. In a few cases, scans made elsewhere to a different standard have been added. If you have access to additional material that could be loaned to us for scanning, please email us at in the first instance.
Making the digital images available online at full resolution is important. Users can pan-and-zoom into small areas of interest without the overhead of downloading the entire image first. The Leaflet viewer makes this possible.
Notice: Images are watermarked to discourage copying, and all images include additional invisible security markings. No method for printing is provided. Researchers wishing to obtain permission to publish images should contact to discuss terms and for unwatermarked copies.