Records for works in EEBO are made available as part of the service in advance of the document images for the works in question in order to help researchers identify the existence of a certain work, and locate it via the source library or the ProQuest microfilm collection. The production process for EEBO records/MARC records is quite separate from the image-manufacturing process. MARC records (from which EEBO Bibliographic records derive) are produced for the microfilm collection Early English Books (EEB) after they are filmed, and are required before new content can be digitized for inclusion in EEBO. Information about the status of both Early English Books Online and Early English Books, its microfilm source, is available in About EEBO. Alternatively, please feel free to use the Webmaster form to inquire about the status of a particular work in EEBO.