A Brief History of Programming Languages

A special Byte Magazine article published for Byte's 20th anniversary special report
http://www.byte.com/art/9509/sec7/art19.htm

Java: Cornerstone of the Global Network Enterprise?

Brian Youman's paper on Java including some historical notes: "Java: Cornerstone of the Global Network Enterprise?"
http://ei.cs.vt.edu/~history/Youmans.Java.html

A Computer Languages (diagram)

A Computer languages timeline, 1954 to present, printable chart. Includes links to home page for many languages.
http://www.levenez.com/lang/

Diagram of Languages

Two diagrams showing how many languages are related to each other.
http://merd.sourceforge.net/pixel/language-study/diagram.html

Historic Documents in Computer Science

Original, historic first documents for many early programming languages, like language manualsa, scanned and converted to PDF form.
http://www.fh-jena.de/~kleine/history/

Wikipedia: PL/I

An encyclopedia description of PL/I history with many links to programming terms.
http://en.wikipedia.org/wiki/PL/I_programming_language

C++ History

A researched article about the history of the C++ programming language, including information provided by Bjarne Stroustrup. Bibiliography and related links.
http://www.hitmill.com/programming/cpp/cppHistory.asp

The History of Computer Programming Languages

Short concise article on programming language history with some links.
http://www.princeton.edu/~ferguson/adw/programming_languages.shtml

Java, timelines

A short history of early Java from 1991 to 1995.
http://ils.unc.edu/blaze/java/javahist.html

History of Ada

Contains a large number of links to historical documents and notes about early Ada.
http://www.adahome.com/History/

Visual Programming Languages: A Survey

This paper by Marat Boshernitsan includes an historical overview of some of the pioneering efforts in the field.
http://www.cs.berkeley.edu/~maratb/cs263/

Timeline of computer history - Software and Languages

Has many links to important events in programming language history.
http://www.computerhistory.org/timeline/timeline.php?timeline_category=sl

Web Programming Languages

Characteristics, alternatives and history of programming languages for the Web - insight into the context in which each language is used.
http://www.freelance-help.com/web-programming.php

Pascal history

A brief look at the birth, life, and death of the Pascal programming language.
http://www.taoyue.com/tutorials/pascal/history.html

History and comparison of programming languages

Has papers on history of programming language comments, literals, and labels.
http://www.gavilan.edu/csis/languages/history.html

History and Evolution

A list of computer languages and some links to compilers for these languages.
http://www.scriptol.org/history.php

O'Reilly: The History of Programming Languages

A poster plots over 50 programming languages on a multi-layered, color-coded timeline.
http://oreilly.com/news/languageposter_0504.html