15 Seeking redshifts for optically unidentifiable IR sources (J. R. Houck) 61 Intrinsic spectra of hyperluminous IR galaxies (G. Rieke) 82 The far-IR SEDs of luminous AGN (G. Rieke) 105 Spectroscopic study of distant ULIRGs II (J. R. Houck) 666 IRS campaign P (J. R. Houck) 1096 Dust in ULIRG environments (H. Spoon) 2306 Buried AGN in ultraluminous IR galaxies (M. Imanishi) 3187 The evolution of activity in massive gas-rich mergers (S. Veilleux) 3231 Establishing the mid-IR selection of AGN (M. Haas) 3640 IRS observations of ultraluminous ELAIS galaxies (I. Perez-Fournon) 3746 A spectroscopic study of local hyperluminous IR galaxies (A. Verma) 20589 The role of mergers and interactions in luminous and ultraluminous IR 20589 galaxies (C. Leitherer) 20113 Probing the moderate redshift galaxies mid- and far-IR SED (H. Dole) 20456 Balancing the cosmic energy budget between AGN and SBs in the GOODS 20456 (R. Chary) 30073 IRS GTO ULIRG program: filling in the gaps (J. R. Houck) 30364 A systematic Spitzer-IRS survey of obscured SB galaxies at 1.0