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| [[Mac Hack]] <ref>[[Richard Greenblatt]], [[Donald Eastlake]], [https://en.wikipedia.org/wiki/Steve_Crocker [Stephen D. Crocker]] ('''1967'''). ''The Greenblatt Chess Program''. Proceedings of the AfiPs Fall Joint Computer Conference, Vol. 31, pp. 801-810. Reprinted reprinted ('''1988''') in [[Computer Chess Compendium]], [http://archive.computerhistory.org/projects/chess/related_materials/text/2-4.Greenblatt_Chess_Program/The_Greenblatt_Chess_Program.Greenblatt_Eastlake_Crocker.1967.Fall_Joint_Computer_Conference.062303060.sm.pdf pdf] from [[The Computer History Museum]] or as [http://dspace.mit.edu/handle/1721.1/6176 pdf or ps] from [http://libraries.mit.edu/dspace-mit/ DSpace] at [[Massachusetts Institute of Technology|MIT]]</ref>