Introduction to Boolean Algebras (undergraduate Texts in Mathematics)Halmos et al. · Undergraduate Texts in Mathematics2009PDF5.0 MB
Hilbert Space Operators: Proceedings, California State University Long Beach, Long Beach, California, 20-24 June, 1977 (lecture Notes in Mathematics, 693)(auth.) et al. · Lecture Notes in Mathematics1978PDF2.3 MB
Measure Theory (graduate Texts in Mathematics (18))Halmos · Graduate texts in mathematics2014PDF22 MB
A Basic Course in Algebraic Topology (graduate Texts in Mathematics)Massey · Graduate texts in mathematics 1271980DJVU3.0 MB
A Glimpse at Hilbert Space Operators: Paul R. Halmos in Memoriam (operator Theory: Advances and Applications Book 207)Halmos · Operator Theory: Advances and Applications 2072010PDF5.0 MB