Spectra compilations
Most print (paper) sources shelved in Spectra in SEL/Chemistry Collection

Aldrich Library of spectra -- collections of ft-ir, nmr, and uv spectra
CS ChemFinder
IR & NMR WebSpectra
NIST Chemistry Webbook
Sadtler Spectra -- collections of ir, inorganic, proton nmr, C13 nmr, raman, uv spectra
SDBS -- Organic Compounds
Sigma-Aldrich Catalog/Handbook of Fine Chemicals
ThermoGalactic Spectra Online -- FTIR and Raman Note: Requires registration to view results