Volume 1 covers classical mechanics without special or general relativity, in the Lagrangian and Hamiltonian formalisms.
These books were published in the early 1970s, at a time when the strong and weak forces were still not well understood.
Volume 5 covers general statistical mechanics and thermodynamics and applications, including chemical reactions, phase transitions, and condensed matter physics.
Volume 8 covers electromagnetism in materials, and includes a variety of topics in condensed matter physics, a chapter on magnetohydrodynamics, and another on nonlinear optics.
Volume 9 builds on the original statistical physics book, with more applications to condensed matter theory.