I was just looking through the api return and sadly I cannot display the created by field. In the administrator panel, the created by field display the creator but only if created by an author or editior - not admin. Even doing so, the created by field is still not being displayed in the return json. I ended up creating a custom field that the author can enter their name. The upside to doing it this way is that the editor or admin can edit the author later if needed. The downside is that the author is needlessly being duplicated and is additional overhead in the database.