John Calvin's works
... that John Calvin's works include some 1,300 letters, making him "the great letter-writer of the Reformation age" according to B. B. Warfield?
... that <b id="mwGIk"><a class="mw-redirect" href="./List_of_works_by_John_Calvin" id="mwGIo" rel="mw:WikiLink" title="List of works by John Calvin">John Calvin's works</a></b> include some 1,300 letters, making him "the great letter-writer of the <a class="mw-redirect" href="./Protestant_Reformation" id="mwGIs" rel="mw:WikiLink" title="Protestant Reformation">Reformation</a> age" according to <a href="./B._B._Warfield" id="mwGIw" rel="mw:WikiLink" title="B. B. Warfield">B. B. Warfield</a>?