This paper describes the contributions of David T. Blackstock to the understanding of nonlinear propagation of jet noise. Although he investigated this problem with students in the 1970s, their findings directly formed the foundation for my own doctoral studies begun in 2002, partly caused by a relative lack of high-amplitude jet noise propagation research in the intervening years. Moreover, exchanges with David during my doctoral program and after led to improved physical insights, additional research directions, and meaningful interactions.

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