How did Dennis Ritchie Produce his PhD Thesis? A Typographical Mystery (fermatslibrary.com)

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Dennis Ritchie, the creator of the C programming language and, with Ken Thompson, the co-creator of the Unix operating system, completed his Harvard PhD thesis on recursive function theory in early 1968. But for unknown reasons, he never officially received his degree, and the thesis itself disappeared for nearly 50 years. This strange set of circumstances raises at least three broad questions…

The Wizard of Oz (Wikipedia) The Wizard of Oz is a 1939 American musical fantasy film produced by Metro-Goldwyn-Mayer (MGM). An adaptation of L. Frank Baum’s 1900 children’s fantasy novel The Wonderful Wizard of Oz, it was primarily directed by Victor Fleming, who left production to take over the troubled Gone with the Wind. It stars Judy Garland, Frank Morgan, Ray Bolger, Bert Lahr, Jack Haley, Billie Burke and Margaret Hamilton. Noel Langley, Florence Ryerson and Edgar Allan Woolf received credit for the screenplay, while others made uncredited contributions. The music was composed by Harold Arlen and adapted by Herbert Stothart, with lyrics by Edgar “Yip” Harburg.