alphabet books
...that alphabet books were one of the earliest forms of American literature?
...that <b id="mwC_s"><a class="mw-redirect" href="./Alphabet_books" id="mwC_w" rel="mw:WikiLink" title="Alphabet books">alphabet books</a></b> were one of the earliest forms of <a href="./American_literature" id="mwC_0" rel="mw:WikiLink" title="American literature">American literature</a>?