Sullivan, Robert A. (9 August 2022). "Collins KW-1 Registry". W0YVA Web Site. Archived from the original on 14 December 2022. Retrieved 14 December 2022.
Sullivan, Robert A. (9 August 2022). "Collins KW-1 Registry". W0YVA Web Site. Archived from the original on 14 December 2022. Retrieved 14 December 2022.