Deafula
... that the first film entirely in American Sign Language was a 1975 vampire movie called Deafula?
... that the first film entirely in <a href="./American_Sign_Language" id="mwCVU" rel="mw:WikiLink" title="American Sign Language">American Sign Language</a> was a 1975 vampire movie called <i id="mwCVY"><b id="mwCVc"><a href="./Deafula" id="mwCVg" rel="mw:WikiLink" title="Deafula">Deafula</a></b></i>?