Timeline chart, 1954 to today, printable; links to homes of many languages.

An encyclopedia description of PL/I history with many links to programming terms.

A list of computer languages and some links to compilers for these languages.

Dedicated to programs that induce sensations that hover somewhere between nostalgia and nausea. The freaks, jokes, and fossils of computing history.

Original, historic first documents for many early programming languages, like language manualsa, scanned and converted to PDF form.

Two diagrams showing how many languages are related to each other.

A poster plots over 50 programming languages on a multi-layered, color-coded timeline.

Papers on use history of: comments, labels, literals, parentheses.

This paper by Marat Boshernitsan includes an historical overview of some of the pioneering efforts in the field.