He has translated Jules Michelet's The People (1973) and has written Tramways and Trolleys: The Rise of Urban Mass Transport in Europe (1976), as well as more than a hundred articles, book chapters and reviews.
Han har översatt Jules Michelets The People till engelska (1973) och skrivit Tramways and Trolleys: The Rise of the Urban Mass Transport in Europe (1976) samt ett hundratal artiklar, bokkapitel och recensioner.