"I can't think of any other design or visual arts publication quite like Signal in form and content. It is halfway between a magazine and a book in appearance and tone. Its dinky size, combined with astutely pitched, matte-laminated cover designs, make it immediately intriguing and attractive."
–Rick Poynor, Design Observer
"Dunn and MacPhee do an impressive job of conveying not only what is new and relevant in political art, but also its history and its presence in the everyday."
–Political Media Review
"The affordable pocketbook format perfectly complements the subject. Editors Dunn and MacPhee make the most of that layout: the reproductions of posters, flyers, murals, and magazine and book covers are clean and clear, with attractive spreads and color reproductions. Verdict: Offering these graphics to generations far beyond their original audiences, this title is recommended for designers, activists, archivists, and scholars studying protest movements."
–Michael Dashkin, Library Journal
