Joe Gregorio
In the long run, the waterfall model will be seen as a odd historical curiosity.
Although many view iterative and incremental development as a modern practice, its application dates as far back as the mid-1950s. Prominent software-engineering thought leaders from each succeeding decade supported IID practices, and many large projects used them successfully.
Abstract of the paper Iterative and Incremental Development: A Brief History, published in IEEE Computer.