Orrin W. Robinson 
Old English and its Closest Relatives [PDF ebook] 
A Survey of the Earliest Germanic Languages

This accessible introductory reference source surveys the linguistic and cultural background of the earliest known Germanic languages and examines their similarities and differences. The Languages covered include:Gothic Old Norse Old Saxon Old English Old Low Franconian Old High German Written in a lively style, each chapter opens with a brief cultural history of the people who used the language, followed by selected authentic and translated texts and an examination of particular areas including grammar, pronunciation, lexis, dialect variation and borrowing, textual transmission, analogy and drift.