The text for the original version of the aria which Puccini later shortened for subsequent editions of the libretto can be found in Susan VanDiver Nicassio, Tosca's Rome: The Play and the Opera in Historical Perspective, University of Chicago Press, 2002, p. 307.
The original lyrics for the aria that Puccini later shortened for future versions of the opera can be discovered in Susan VanDiver Nicassio's book Tosca's Rome: The Play and the Opera in Historical Perspective, University of Chicago Press, 2002, page 307.