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