2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38581I summarize recent developments in spectrum calculations using Kogut-Susskind quarks. Theoretical developments include one-loop computations with improved actions. I present some recent simulation results, mostly from a MILC collaboration project using three flavors. Effects of dynamical quarks are clearly seen in the isovector 0++ meson propagator and in the mass ratio ``J''.6 pages, contribution to Lattice2001(plenary) figures resized, reference addedHigh Energy Physics - Latticetext