Larry Fahnestock has been invited to deliver a keynote lecture at the 2022 edition of the International Colloquium on Stability and Ductility of Steel Structures (SDSS 2022), to be held at the University of Aveiro, Portugal, on 14-16 September. The event next year will mark the 50-year anniversary for this series of SDSS colloquia, which was started in Paris, France (1972). The SDSS colloquia series – supported by the Structural Stability Research Council (SSRC) and the European Convention for Constructional Steelwork (ECCS) – provides a forum for discussion and dissemination, by researchers and designers, of the most recent advances in theoretical, numerical and experimental research in the field of stability and ductility of steel and composite steel and concrete structures.