• Kotlas, seine Eisenbahnbrücke und die Deutschen - MDZ - mdz-moskau.eu
• Madeline Kotlas Obituary (2023) - Lebanon, NH - Valley News - Legacy.com
• RusLine to resume subsidised Kotlas-Saint Petersburg service from ... - CAPA - Centre for Aviation
• Former mayor of Kotlas, accused of accepting bribes of 18 million rubles, was found dead in a remand center - The Eastern Herald
• Maureen Kotlas takes over Department of Environmental Safety, Sustainability and Risk - The Diamondback