Chebyshev and Fourier Spectrum Models
Problem Course in Mathematical Logic
A Plethora of Books from the AMS (I'm assuming that is the American Mathematical Society.)
Dynamical Systems and Ergodic Theory
Jacobi Operators and Completely Integrable Nonlinear Lattices
Good heavens! Thanks Steven, this is just, well, cool! Oh, and I'm glad you and yours are safe and sound.