The Free On-line Dictionary of Computing (30 December 2018):

Smalltalk-80

    The classic standard Smalltalk dialect, described
   in Adele's book, cited below, commonly known as "The Blue
   Book".

   ["Smalltalk-80: The Language and Its Implementation", Adele
   Goldberg et al, A-W 1983].

   [BYTE 6(8), Aug 1981].

   (ftp://st.cs.uiuc.edu/pub/ISA),
   (ftp://st.cs.uiuc.edu/pub/Smalltalk/MANCHESTER),
   (ftp://gnu.org/pub/gnu).

   Mail server: goodies-lib@r5.cs.man.ac.uk.

   (2004-12-14)