References & Sources:

Writing & Illuminating, & Lettering - by Edward Johnston (Online Archive)
https://archive.org/details/writingilluminat00johnuoft

Friends of Calligraphy
http://www.friendsofcalligraphy.org/index.html

The Passionate Pen
http://www.thepassionatepen.org/

Association Calligraphis
http://www.calligraphie.com/

Associazione Calligrafia Italiana
http://www.calligrafia.org/wp/

Japan Letter Arts Forum
http://j-laf.org/

The Flourish Forum
http://theflourishforum.com/

IAMPETH
http://www.iampeth.com/
 
Peannairi - Association of Irish Calligraphers
http://www.calligraphy.ie/ 

David Grimes - Engrosser's Script Calligraphy
http://masgrimes.com

David Grimes - Zanerian Manual (Please be respectful when using it)
 https://masgrimes.com/archive/zanerian-manual 

David Grimes - Catalog of Script Cuts (Please be respectful when using it)
https://masgrimes.com/archive/catalog-of-script-cuts

Writing Tools

植物生活文具 Stationery & Homeware
https://plain.tw 

尚羽堂
http://finewriting.com.tw/shop/index.php?route=common/home

John Neal Bookseller (books for calligraphers & artists)
http://www.johnnealbooks.com/
 
Blotspens.co.uk (calligraphy supplies delivering over the world)
http://www.blotspens.co.uk/index.html 
 
 Scribbers Calligraphy Matters (calligraphy supplies delivering over the world)  
http://www.scribblers.co.uk/ 

 Calli art (calligraphy supplies delivery over the world)
http://www.kalligrafie.com/index.php?route=common/home