J. Palis and F. Lenarduzzi, Welington de Melo and Jacob Palis: their first meeting, some of their work on structural stability and a lifetime of friendship -- E. de Faria and S. van Strien, Welington de Melo (1946-2016) -- A. Avila and V. Delecroix, Some monoids of Pisot matrices -- P. Brandao, J. Palis, V. Pinheiro, On the statistical attractors and attracting Cantor sets for piecewise smooth maps -- S. Bullett, L. Lomonaco and C. Siqueira, Correspondences in complex dynamics -- A. de Carvalho and T. Hall and P. Hazard, Braid quivalence in the Henon Family I -- E. Catsigeras, Empiric stochastic stability of physical and pseudophysical measures -- L. J. Diaz and S. A. Perez, Blender-horseshoes in center-unstable Henon-like families -- E. de Faria, P. Hazard and C. Tresser; Growth, topological entropy, slow entropy, equicontinuity, topological complexity -- J. Epperlein, D. Kwietniak, P. Oprocha, Mixing properties in coded systems -- G. Levin, W. Shen and S. van Strien, Transversality for critical relations of families of rational maps: an elementary proof -- J. Rodriguez Hertz, R. Ures, On the three-legged accessibility property -- L. Salgado, V. Coelho, Adapted metrics for codimension one singular hyperbolic flows -- M. Stadlbauer, On conformal measures and harmonic functions for group extensions -- M. Yampolsky and J. Yang, The boundaries of golden-mean Siegel disks in the complex quadratic Henon family are not smooth -- Wellington's photos from childhood to academic life.