Ukulele Chord Dictionary: Handy Guide (Alfred Handy Guide)

Sound Innovations for String Orchestra -- Sound Development: Viola

Strictly Strings, Bk 2: Cello

String Explorer, Bk 1: Viola, Book & Online Audio/Software

Giant Book of Violin Classics for Violin with Piano Accompaniment (Schirmer's Library of Musical Classics, 2152)

79VA – All For Strings Book 2 – Viola

Ukulele Aerobics For All Levels, from Beginner to Advanced Book/Online Audio

Sound Innovations for String Orchestra -- Sound Development: Cello

A Tune a Day - Violin: Book 1

Suzuki Violin School, Volume 3: Violin Part (Book & CD)