Elma Doflein & Erich Doflein 
The Doflein Method [PDF ebook] 
The Violinist’s Progress. Further technique in bowing and fingering chiefly in the first position

Chapter 1: Practice for characteristic motion in classical and pre-classical music — Chapter 2: Trills and short appoggiatura — Chapter 3: Accents — Chapter 4: Various bowings of dotted eighth notes (dotted quavers) — Chapter 5: Syncopation — Chapter 6: Spiccato and similar types of bowing — Chapter 7: Studies in rhythm — Chapter 8: Additional practice in tone quality and expression — Chapter 9: Double-stopping and chords — Appendix: the scales and triads of all major and minor keys