Royal Society of Miniature Painters, Sculptors and Gravers.
The Miniature Painters, Sculptors & Gravers Society of Washington, D.C, U.S.
Miniature Art Society of Florida, U.S.
The Hilliard Society of Miniaturists, UK.
Cider Painters of America, U.S.
Society of Limners.
Miniature Art Society, South Africa.
The Practice of Painting in Enamel
By Gillie Hoyte Byrom
Modern Masters of Miniature Art In America
By Wes Siegrist
Wes put all the scholarly content online in a blog and has made subsequent updates to this book since the 2010 publication date. The published book can be downloaded for free online too.