This collection of nine articles brings together the research of contributors applying NMR and IR spectroscopic methods to study a wide variety of industrial, homogeneous transition metal catalyzed reactions used for the manufacture of high tonnage products such as aldehydes and alcohols. Their general topics include high pressure NMR cells, the use of high pressure infrared spectroscopy to study catalytic mechanisms, processing spectroscopic data, carbonylation of methanol to acetic acid and methyl acetate to acetic anhydride, rhodium catalyzed hydroformylation, alkene/CO copolymerization, the use of spectroscopy in metallocene-based polymerization catalysis, and hydrogenation.