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"FY 2019 Federal Form 990"(PDF). Nautilus Institute for Security and Sustainability. 19 November 2020. Retrieved 15 July 2022.
"About Nautilus - History". Nautilus Institute for Security and Sustainability. n.d. Archived from the original on 13 May 2022. Retrieved 15 July 2022.
"About Nautilus - History". Nautilus Institute for Security and Sustainability. n.d. Archived from the original on 13 May 2022. Retrieved 15 July 2022.