Notice how Krazy Cat and Ignatz Mouse's mouths move, and then quite belatedly, the words appear in balloons afterward. This can be distracting for modern audiences, but it was 1916. Remember how long the intertitles in silent films are, to allow for people who don't read well, which was most people at the time. This is not the first Krazy Kat cartoon, but 1916 was the first year they were produced. This cartoon is in the Library of Congress.