Below is a link to a pdf file containing my very rough translation of selected sections of Max Planck's 1906 Lectures on Thermal radiation  (Vorlesungen über die Theorie der Wärmestrahlung (Leipzig: Barth, 1906)), prepared in connection with my article "Planck, the Quantum, and the Historians," Physics in Perspective 4 (2002), 170-215. PDF  Unlike the second edition of 1913, which is widely available in translation, the first edition of 1906 was never translated into English.

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