We have detected strong CO and CI emission from a quasar, the
 Cloverleaf (H1413+117), at redshift 2.56.  This is the first
 luminous, high-redshift quasar known with molecular emission,
 and as such presents a unique opportunity to investigate the
 interstellar medium in a quasar host galaxy at early epochs
 of the universe.  Because of the similarity of its molecular
 and FIR continuum properties to those of the z=2.3 ultraluminous
 galaxy IRAS F10214+4724, it will also allow us to test at the
 highest luminosities and in the early universe theories which
 attempt to unify infrared galaxies and quasars.  We plan to
 study atomic fine-structure lines in the proposed program.  Analysis
 of the results using theoretical models with starburst and AGN
 components will help determine the ultimate energy source for
 the powerful ISM emission from this quasar. To facilitate direct
 comparison between the Cloverleaf and IRAS F10214+4724, our
 observing strategy is to essentially duplicate the AOTs and
 observing times for F10214+4724 already specified in the Guaranteed
 Time Programs of Smith et al (LWS) and Genzel et al (SWS).