2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/8508We summarize constraints on neutron star masses from ongoing timing observations of pulsar-white dwarf binaries at Arecibo. The trend is toward pulsar masses larger than the canonical value of 1.35 solar masses.2 pages, to appear in "Binary Radio Pulsars", eds F. A. Rasio & I. H. Stairs, PASP conf seriesAstrophysicstext