- https://www.amazon.com/stores/Harold-Rosen/author/B001KCE1F2
- https://www.amazon.ca/stores/Harold-Rosen/author/B001KCE1F2
- https://bahaibooks.com.au/collections/harold-rosen
- https://corinnetruecenter.org/harold-rosen-eye-to-the-ages-a-bahai-inspired-philosophy-of-history/
- https://bahaiteachings.org/author/harold-rosen/
- https://www.youtube.com/watch?v=vY5P_R1V1Q8
- https://www.youtube.com/watch?v=2_QSDG2soGM