Where to find spectra data for chemical substances?

The Aldrich library of infrared spectra (Science Library Perm Reserve QD96.I5 P67 1981)

The Aldrich library of NMR spectra (Science Library Perm Reserve QD96.N8 P68 1983; 2 volumes)

Atlas of spectral data and physical constants for organic compounds (Science Library Reference QD257.7 .G7 1975; 6 volumes; covers IR, R, UV, H NMR, C NMR spectra)

Carbon-13 NMR spectra; a collection of assigned, coded and indexed spectra (Science Library Reference QC462.C4 J64)

CrossFire Beilstein (online; for organic compounds only)

Dictionary of inorganic compounds and supplement volumes (Science Library Reference QD148 .D53 1992 and QD148 .D532; 9 volumes; potentially contains references to spectra data in the literature)

Dictionary of organic compounds and supplement volumes (Science Library Reference QD246 .D5 1982; 19 volumes; potentially contains references to spectra data in the literature)

Dictionary of organometallic compounds and supplement volumes (Science Library Reference QD411 .D53 1984; 9 volumes; potentially contains references to spectra data in the literature)

Infrared and Raman spectra of inorganic and coordination compounds (Science Library QD96.I5 N33 1997; 2 volumes)

Infrared spectra of inorganic compounds (3800-45cmp-1s) (Science Library Oversize QC457 .N93 1971)

NIST Chemistry WebBook (online; potentially contains IR, Mass, and UV spectra data)

Organic electronic spectral data (Science Library Reference QC437 .O65; 31 volumes; covers UV spectra)

The Sadtler guide to carbon-13 NMR spectra (Science Library Oversize QC762 .S28 1983)

Sigma-Aldrich (online)

Structure determination of organic compounds: tables of spectral data (Science Library Reserve QC462.85 .T313 2000)

Wiley/NBS Registry of Mass Spectral Data ( Science Library Reference QC454.M3 M395 1989; 7 volumes)