Sprang - The history, origins, construction and use of thread twisting: http://www.regia.org/sprang.html
-Regia Anglorum’s introduction to the history of sprang, with some details on construction.

Phiala’s Sprang page: http://www.stringpage.com/sprang/sprang.html
-Pictures of her works, a handout on making sprang bags, another handout on patterned sprang, and the basics of creating a circular warp for sprang.

Oddny’s Basic Sprang Instructions: http://www.angelfire.com/journal2/donisfuff/sprang1.html
-a basic webpage from the creator of Sprang: A Twisted Little Art
: http://www.angelfire.com/journal2/donisfuff/coptic.html
-with pictures and instructions on creating Coptic patterned (twined) sprang

Sprang: http://housebarra.com/EP/ep07/11sprang.html
-Introduction to Sprang based on Peter Collingwood’s book, focusing on getting started with the technique.

Thora’s Old World Sprang through the Early Middle Ages: A Brief Bibliography: http://www.cs.vassar.edu/~capriest/sprangbib.html
-An annotated bibliography on sprang, technique, history, variations of techniques, and extant pieces

Den Blauwen Swaen: http://www.denblauwenswaen.nl/engels.htm
-A reenactor in the Netherlands who has great technique pages on sprang, as well as nalbinding and wool dying. (After following the link to the site in English, click on Techniques from the menu, and the picture next to Sprang for her works and inspirations.) Basic instructions with pictures and video outside of the main site's frames: http://www.denblauwenswaen.nl/public/sites/english/techniques/sprang_how_it_works.htm

Genevieve’s String page: http://genvieve.net/sca/stringarts.html
-Links to two pages of pictures of sprang bags, at the bottom of the page, created based on basic instructions

Collingwood, Peter The Techniques of Sprang: Plaiting on Stretched Threads. Green Editorial; First edition. June 1999.  ISBN-13: 978-1558219670. Copies available on Amazon.com and other booksellers.

Hald, Margrethe. Ancient Danish Textiles from Bogs and Burials: A Comparative Study of Costume and Iron Age Textiles, translated by Jean Olsen. Publications of the National Museum, Archaeological-Historical Series, Vol. XXI. Copenhagen: National Museum of Denmark, 1980.