Some Personal Notes on More Than One-Half Century of Organometallic Chemistry; Oxidative-Addition Reactions of d8 Complexes; Keto Derivatives of Group IV Organometalloids; [sigma]-Alkyl and -Aryl Derivatives of Transition Metals; Organometallic Nitrosyls; Recent Developments in the Organic Chemistry of Lead: Preparations and Reactions of Compounds with Pb-C, Pb-H, Pb-N, and Pb-O Bonds.