There are many online databases of digitized spectra of stellar objects at the National Space Science Data Center (NSSDC) available at the Astronomical Data Center's (ADC) Anonymous FTP site. (There are a few other sources as well)

There is a graphics intensive experimental page with various types of plots based on the data from the NASA spectra database.

There is another version of this page with more detailed author information.

Optical Spectra

Ultraviolet spectra

Infrared spectra

Multi-Wavelength spectral distribution

Star Catalogs

Various catalogs of Wolf-Rayet, Be star and emission line stars and online publications and magazines relating to hot stars.

I grow daily to honor facts more and more, and theory less and less. A fact, it seems to me, is a great thing - a sentence printed, if not by God, then at least by the Devil.
- Thomas Carlyle: Letter to Emerson, April 29, 1836.
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