Many Maine newspapers are available on microfilm in the Government Documents and Microform area of the Library. They can be viewed in the library on the first floor.
Special Collections houses paper copies of some Maine newspapers in the Library Annex. These newspapers can be made available for researchers with advance notice of one week. Because of the fragile nature of most papers, photocopying is generally not allowed. In many cases, the holdings include only a few scattered issues of a particular newspaper. Please call ahead to be sure the issue you are looking for is here.
Look here for a list of these Maine newspapers:
For holdings of current Maine newspapers check URSUS.