Book publishing; Book and review publishing; Publishing books in the field of do-it-yourself writings or publications; Publishing audio books in the field of DIY publications; Publishing e-books in the field of DIY publications; Publishing of books and reviews; Publishing of books, e-books, audio books, music and illustrations; Publishing of books, magazines; Publishing of journals, books and handbooks in the field of medicine; Multimedia publishing of books, magazines, journals, software, games, music, and electronic publications; Online electronic publishing of books and periodicals; Providing an on-line computer database in the field of culture and history, namely, providing a searchable database, focusing on prehistory to the present, featuring bibliographical records, full text journals, reference books, periodical articles, primary source documents, monographs, biographies, images, and abstracts in English of articles published in more than forty languages, related to all aspects of American and Canadian history