This could include individual chapters of a book with contributions from multiple authors. Doctoral dissertations, also recognized by the Library of Congress. Just send us a copy of the work in the regular mail, along with a signed cover letter that provides a full reference to the work and a statement that your research did rely on National Patterns data. Earmark the pages and highlight the text where National Patterns data are mentioned. For books, dissertations, and monographs, you need only send one chapter that best demonstrates reliance on National Patterns data.
Copies made on both sides of a page are acceptable.