Free public domain sheet music from IMSLP / Petrucci Music Library
Hamburg: the Author, n.d.
Public Domain [tag/del]
Several pieces include notes that are well out of normal flute range (e.g. a bass A in Sonata 1, Allegro)
Includes some exercises by Quantz on the final page.
||Idea dell'Articolare rappresentata nelle 6 sonate traversiere solo