Bassoon: Fingering Charts — Finger Chart
Finger Chart is a free site with interactive fingering charts for flute, oboe, clarinet, bass clarinet, saxophone, bassoon, trumpet, horn, trombone, euphonium, baritone and tuba. Users select a note to see the fingering and hear it at concert pitch, and each chart can be printed as a PDF. It's aimed mainly at developing players and students learning secondary instruments.
Bassoon: Fingering Charts — WFG
“This fingering chart includes both basic fingerings and alternatives that are more appropriate in some passages. Some alternate fingerings are designed for fast passages, while others modify the tone, color, or pitch at normal and extreme dynamic levels. The fingerings apply to Heckel-system (German) bassoons. There is a separate alternate fingering chart for Heckel-system contrabassoon.”
Bassoon: Multiphonics for Modern Bassoon — Leslie Ross
“With several recordings of each multiphonic and using a couple of different reeds, an attempt was made to note some of the most prominent repeatable frequencies present in these tones. They are much more complex and variable than what is transcribed here and it is precisely their richness and complexity that is what is most appealing about them.”
Clarinet: Multiphonics and Microtones — Gregory Oakes
Fingering for multiphonics and microtones on the clarinet.
Flute: Fingering Charts — WFG
“[A] list of all available fingering charts for Boehm-system flutes, which are the modern, most common type used today in bands and orchestras.”