Computer Languages History - A Computer Languages History (diagram).

http://www.levenez.com/lang/

Historic Documents in Computer Science - Historic Documents in Computer Science collected by Karl Kleine.

http://www.fh-jena.de/~kleine/history/

A Brief History of Programming Languages - A Brief History of Programming Languages.

http://www.byte.com/art/9509/sec7/art19.htm

O'Reilly: The History of Programming Languages - O'Reilly has produced a poster called History of Programming Languages, which plots over 50 programming languages on a multi-layered, color-coded timeline.

http://oreilly.com/news/languageposter_0504.html

The History of Java Technology - History of Java Technology.

http://www.java.com/en/javahistory/

History and Comparison of Programming Languages - Topics in history and comparing programming languages.

http://www.gavilan.edu/csis/languages/history.html

The Development of the C Language - The Development of the C Language / Dennis M. Ritchie
Bell Labs/Lucent Technologies.

http://cm.bell-labs.com/cm/cs/who/dmr/chist.html

History of Ada - History of the Ada programming language.

http://www.adahome.com/History/

History and Evolution - Description of all programming languages. For each langage, a link to a free compiler or an interpreter.

http://www.scriptol.org/history.php

Fortran Versions - A Brief History of FORTRAN/Fortran.

http://www.ibiblio.org/pub/languages/fortran/ch1-1.html

Fortran 77 - A Brief History of FORTRAN 77.

http://www.liv.ac.uk/HPC/HTMLF90Course/HTMLF90CourseNotesnode29.html#SECTION00031000000000000000