Jeffreys-Jones, Rhodri (2014). "Jessie Jordan: A Rejected Scot who Spied for Germany and Hastened America's Flight from Neutrality". The Historian. 76 (4): 766–83. doi:10.1111/hisn.12051. S2CID145276384.
Jeffreys-Jones, Rhodri (2014). "Jessie Jordan: A Rejected Scot who Spied for Germany and Hastened America's Flight from Neutrality". The Historian. 76 (4): 766–83. doi:10.1111/hisn.12051. S2CID145276384.