Robert M. Schwartz:Mail, Rail, and Legwork: State and Nation Building through Postal Service in France and Great Britain, 1830–1914. In: Social Science History. Band45, Nr.2, Mai 2021, ISSN0145-5532, S.291–316, doi:10.1017/ssh.2021.6 (cambridge.org[abgerufen am 28.April 2025]).
Robert M. Schwartz:Mail, Rail, and Legwork: State and Nation Building through Postal Service in France and Great Britain, 1830–1914. In: Social Science History. Band45, Nr.2, Mai 2021, ISSN0145-5532, S.291–316, doi:10.1017/ssh.2021.6 (cambridge.org[abgerufen am 28.April 2025]).
Robert M. Schwartz:Mail, Rail, and Legwork: State and Nation Building through Postal Service in France and Great Britain, 1830–1914. In: Social Science History. Band45, Nr.2, Mai 2021, ISSN0145-5532, S.291–316, doi:10.1017/ssh.2021.6 (cambridge.org[abgerufen am 28.April 2025]).