Adding a Missing Publisher
Navigate to your Editing page using the "Editing" link at the right of the search bar on any page. Then click the "Add New" link on your Editing page, then click the "Add Publisher" button on the resulting page. The following screen will appear.
You may then fill in all the information you know about a publisher in the fields available. For more information on any of the fields, please see the Formatting Documentation page. Press the "Submit new publisher" button when finished. The information will be submitted for approval by an Editor. When approved (usually within a week) the new publisher will be available to use for adding series to. If the Editor has any questions during approval, he will contact you.
Also see the OI Tutorial for more information on beginning a new index.