With the pictures I have shown I have tried to document what we were doing. But some references that we have used are:
Dress in Anglo-Saxon England by Gale R. Owen-Crocker
Viking Clothing by Thor Ewing
The Techniques of Sprang by Peter Collingwood
The Warp-weighted Loom by Marta Hoffmann
Nalbinding Made Easy by Sigrid Briansdotter
Prehistoric Textiles by E.J.W Barber
The Techniques of Table Weaving by Peter Collingwood
This is an excellent article on the history and morphology of historic brooches.
https://en.m.wikipedia.org/wiki/Celtic_brooch
This is a link to the Hedeby artifacts: http://www.hurstwic.org/history/articles/daily_living/text/clothing.htm