Volumes 45a and 45b of Advances in Econometrics honor Professor Joon Y. Park, who has made numerous and substantive contributions to the field of econometrics over a career spanning four decades since the 1980s and counting. This second volume, Essays in Honor of Joon Y. Park: Econometric Methodology in Empirical Applications, focuses on econometric applications related, some closely and some very loosely, to Professor Park’s more recent work before concluding with a retrospective summarizing four decades of Advances in Econometrics.