* As a PDF: [Turing, On computable numbers, with an application to the Entscheidungsproblem](https://www.cs.virginia.edu/~robins/Turing_Paper_1936.pdf)
* As a collection of single images: [Turing, On computable numbers, with an application to the Entscheidungsproblem](http://www.cs.virginia.edu/~robins/Turing_Paper_1936.pdf) by Alan Turing
* :scroll: [Back to the Future - The Story of Squeak, A Practical Smalltalk Written in Itself](story-of-squeak-a-practical-smalltalk-written-in-itself.pdf) by Dan Ingalls, Ted Kaehler, John Maloney, Scott Wallace & Alan Kay
* :scroll: [Recursive Functions of Symbolic Expressions and Their Computation by Machine, Part I](recursive-functions-of-symbolic-expressions-and-their-computation-by-machine-parti.pdf) by John McCarthy
* [On the Computational Complexity of Algorithims](http://www.ams.org/journals/tran/1965-117-00/S0002-9947-1965-0170805-7/S0002-9947-1965-0170805-7.pdf) by J. HARTMANIS AND R. E. STEARNS
* :scroll: [Early Lisp History: 1956-1959](early-lisp-history-1956-1959-herbert-stoyan-html-rendering.pdf) by Herbert Stoyan. This is a pdf rendering of the HTML page available at Archive.org.
* :scroll: [Why Programming is a good medium for expressing poorly understood and sloppily-formulated ideas](http://web.media.mit.edu/~minsky/papers/Why%20programming%20is--.html) by Marvin Minsky