Wikipedia –serif fonts – brings a lot of material together
en.wikipedia.org/wiki/Serif_fonts
Font Finder
linotype.com/5/fontfinder.html
My fonts
new.myfonts.com/fonts/
Cavendish Gallery of Print and Typography
This is a collection of print and typography images throughout the ages.
Fontshop
Fonts available for sale.
Identifont
Independant directory of digital fonts.
Linotype
A company dating from 1886 dealing in high quality typography and font resources.
Microsoft Typography
Microsoft's Typography group researches and develops fonts and font technologies, and supports the development of TrueType and OpenType formatted fonts by independent type vendors.
Individual fonts
Baskerville
idsgn.org/posts/know-your-type-baskerville/
pointlessart.com/education/loyalist/typeTalk/baskerville/type_page_2.html
Bodoni;
itcfonts.com/NR/rdonlyres/404A51F6-87FC-4337-B54A-4DA7005DD05B/0/ILBodoni.pdf
Didot;
typography.com/fonts/font_overview.php?productLineID=100004
Goudy
goudyfonts.com/
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A2Z+ : alphabets & signs
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Elegantissima : the design & typography of Louise Fili by 
