Broadcast history has taken a transnational turn. Whereas once radio studies focused almost exclusively on national systems, the global context is receiving new attention. New works exploring transnational collaboration and interchange in early radio and television are broadening our understanding of broadcasting’s development. Derek Vaillant’s Across the Waves provides an important addition to this growing body of scholarship. In exploring the interconnections between broadcasters in the United States and France from the early 1930s to the early 1970s, Vaillant details the numerous ways that the systems negotiated, cooperated, and collaborated. “This book,” Vaillant writes, “studies the users and developers of U.S.-French broadcasting to illuminate the complexity of international broadcasting and reveal its consequences for cultural affairs and geopolitics” (p. 3). Vaillant treats “international connectivity as central, rather than peripheral to the rise of modern broadcasting” (p. 4) by illustrating how United States and French broadcasters bridged differing (and often contrasting) cultural, political, and social conceptions of broadcasting.