The links below are collections of spectral data, which are very useful for comparisons to research spectra. Most are either freely available, or require only a password for free access to the site involved. We find these to be a big help!

Spectral Database for Organic Compounds	Thermogalactic Spectra Online
NIST Web-book	SpectroscopyNOW.com
Queensland University of Technology Analytical Database Links	Spectral City
Energy Unit Conversions
Oregon Medical Laser Center UV-FL Spectral Database	NIEHS EPR Spin-Trap Database