Remarks on the History of Strong-Interaction Symmetries , The Broken Symmetry and the Mass Formula , The Eightfold Way , Derivation of Strong Interactions from a Gauge Invariance , Note on Unitary Symmetry in Strong Interactions*) , The Decimet and the Omega-Minus , Strange Particle Physics. Strong Interactions , Observation of a Hyperon with Strangeness Minus Three , Further Assignments of Supermultiplets , Eightfold-Way Assignments for Y 1*(1660) and Other Baryons , The Meson ?(725) and the Eightfold Way , Baryon-Baryon Interactions and the Eightfold Way , ?-? Mixing , Possible Existence of a T = 0 Vector Meson at 1020 MeV † , ?? Mixing , Experimental Consequences of ??? Mixing , Intensity Rules , The Octet Model and its Clebsch-Gordan Coefficients , Verification of The Tenfold Assignment of The Baryon Resonances , Comparison of A New SU3 Prediction With Experiment , Electromagnetic Interactions of The Hadrons , Electrodynamic Properties of Baryons in The Unitary Symmetry Scheme , Some Consequences of Unitary Symmetry Model 1 , Triplets and Triality , A Schematic Model of Baryons and Mesons 1 , The Weak Current of The Hadrons , The Symmetry Group of Vector and Axial Vector Currents , Unitary Symmetry and Leptonic Decays , Conserved and Partially Conserved Currents in the Theory of Weak Interactions , Symmetries of Baryons and Mesons , Current-Generated Algebras , The Nonleptonic Weak Interaction , Octet Enhancement , Possible Unitary Symmetry Properties of the Intermediate Bosons and their Interactions , Nonleptonic Weak Decays and the Eightfold Way , Broken Symmetry and the Bootstrap Hypothesis , A Mechanism for the Induction of Symmetries Among the Strong Interactions , Spontaneous Breakdown of Octet Symmetry , Self-Consistent Deviations from Unitary Symmetry , The Fifth Interaction , The Physical Uniqueness of the Eightfold Way , The Symmetry Approach to Particle Physics , New Contributions , Particle Theory From S-Matrix to Quarks , Hadron Symmetry, Classification and Compositeness , Appendix I , Appendix II , Appendix III