University of Michigan
The University of Michigan: Instrument Encyclopedia: Transverse Flute
In addition to providing general information on the transverse flute and references for further reading and research, this lesson includes an audio file so that you can hear "the sound of a baroque wooden flute."
Other
Mark Shepard's Flute Page
At this website "you'll find resources for playing the flute and for making simple folk flutes." Includes a "Flute Fingering Chart" that you can download.