The first printed version of the play came with the Folio of 1623.
And so, from hour to hour, we ripe and ripe, and then from hour to hour, we rot and rot; and thereby hangs a tale.
Different prints have conflicting credits. For the 1936 U.S. version, Robert Cullen is credited (as R.J. Cullen) for production manager and scenario, but for the 1949 re-release, he is credited only as production manager, and 'Carl Mayer' is credited with adaptation. Similarly, for the 1936 version, Elisabeth Bergner's name is above the title for the opening credits, but in the 1949 re-release Laurence Olivier's name is above the title (as can be seen from the IMDb poster).