Computer Languages History
Timeline chart, 1954 to today, printable; links to homes of many languages.
Diagram of Languages
Two diagrams showing how many languages are related to each other.
Historic Documents in Computer Science
Original, historic first documents for many early programming languages, like language manualsa, scanned and converted to PDF form.
O'Reilly: The History of Programming Languages
A poster plots over 50 programming languages on a multi-layered, color-coded timeline.
The Retrocomputing Museum
Dedicated to programs that induce sensations that hover somewhere between nostalgia and nausea. The freaks, jokes, and fossils of computing history.
An encyclopedia description of PL/I history with many links to programming terms.