Elma Doflein & Erich Doflein 
The Doflein Method [PDF ebook] 
The Violinist’s Progress. Development of technique within the first position

Chapter 1: F major — Chapter 2: The minor mode of baroque and classical music — Chapter 3: B flat major and G minor — Chapter 4: More rapid movement — Chapter 5: Pieces in slow time — Chapter 6: New types of bowing — Chapter 7: F sharp minor and C sharp minor — Chapter 8: Practice in old polyphonic music — Chapter 9: Short strokes with raised bow (spiccato) — Chapter 10: Frequent changing in the position of the semitone stop — Chapter 11: Playing on two strings — Chapter 12: Successive notes on non-adjacent strings — Chapter 13: Eleven Duets