The conventional history of paediatric cardiology teaches that it was Helen Taussig who founded the cardiac clinic for children at the Harriet Lane Home of the Johns Hopkins School of Medicine in 1930, when Edwards Park appointed her director of the clinic.1,2 However, the story was more complex than that, and involved the collaboration of institutions and the frustrations, doubts, and passions of both Park and Taussig. In this article, I explore the history in more depth through published works, and material preserved at the McGill University Archives, the Rockefeller Foundation Archives, and the Alan Chesney Medical Archives at Johns Hopkins.