Hello..

After a three year break I decided to dust off the old flute. I was pleasantly surprised to find out that many books are now public domain and on the internet. I've always trained classically so my practices are heavy on scales and etudes. Here is my list of flute essentials, hope you find some of this useful. Feel free to add your own to the list and please provide the links. 

Taffanel et Gaubert, 17 Grands Exercises Journaliers de Mecanisme
http://www.scorser.ru/download.aspx?id=4D9FD6A33E4B602DEE33A8253068CB29&ip=-2146237828

Taffanel et Gaubert, Complete Flute Method
Part 1: 
http://www.scorser.ru/download.aspx?id=B18A407D72A1F26CA090F66FFE34900C&ip=-2146237828

Part 2: 
http://www.scorser.ru/download.aspx?id=E44936982A7D863A66039F17C47CCA78&ip=-2146237828

Part 3: 
http://www.scorser.ru/download.aspx?id=0EF32EF32B2D6890C0DDAFBA763FFAC8&ip=-2146237828

Part 4:
http://www.scorser.ru/download.aspx?id=F911C04ACBB760909F46F2ACC2D1C73D&ip=-2146237828

Marcel Moyse, 24 Petites Etudes Melodiques
http://www.scorser.ru/download.aspx?id=179FE36716AA55196588F9557CA311DC&ip=-2146237828

Marcel Moyse, 25 Etudes Melodiques
http://www.scorser.ru/download.aspx?id=5B170C3E7FC5F618840F1E7AC71BC778&ip=-2146237828

Marcel Moyse, Mechanisme Chromaticism
http://www.scorser.ru/download.aspx?id=7D0FE3AF96DA2D2ABBC7726AE33BAC3D&ip=-2146237828

Marcel Moyse, Scales 
http://www.scorser.ru/download.aspx?id=D86052E0C0049C6A11199C862D2DDCA8&ip=-2146237828

Altes, Method for Boehm Flute
Part 1:
http://www.scorser.ru/download.aspx?id=6386F560763DD242BCAAA783CC786044&ip=-2146237828

Part 2: 
http://www.scorser.ru/download.aspx?id=7476FA4269BDD9806071D0A11C753D08&ip=-2146237828

Gariboldi, 30 Easy and Progressive Studies
http://www.scorser.ru/download.aspx?id=26E1B1C3F932985071B06B6B930C0C85&ip=-2146237828

Gariboldi, 20 Studies
http://www.scorser.ru/download.aspx?id=D56714CC933AEAB209568B7EDE7EED5D&ip=-2146237828

Drouet, 25 Studies
http://www.scorser.ru/download.aspx?id=581F6DE6353D467D91A24FC5838717C5&ip=-2146237828

Other:
The Amateur's first book : or, The Flute without a master
http://archive.org/stream/amateursfirstboo00buff#page/n3/mode/2up