Practical Method for the Bassoon (Ambrosio)(purple cover) - BSN

Practical Method for Bassoon
by Julius Weissenborn (1837-1888) - German bassoonist, composer and pedagogue

The full title is:
"Practical Method for the Bassoon" including "Fifty Advanced Studies" 
Augmented and Adapted by W.F. Ambrosio
This edition is often referred to as the "Purple Weissenborn". Included in this edition are the "Practical Method for Bassoon" as well as the "Fifty Advanced Studies Op 8 #2". There is also a trill chart, and a brief introduction and tutor about the bassoon.