The Doflein Method for Violin Volume 1: The Beginning by Erich Doflein and Elma Doflein
The Doflein Method for Violin Volume 1: The Beginning by Erich Doflein and Elma Doflein starts this wonderful course in violin instruction combined with musical theory and practice in duet-playing aimed at "past" beginners.  This is the first volume of 5.