Letter from Truong Ty Y-Te.
Bác sĩ Le Ky Van, Trưởng Ty Y-Tế
Letter from Truong Ty Y-Te, 22730107005. No Date, Box 01, Folder 07, 121st Aviation Association Collection, Vietnam Center and Sam Johnson Vietnam Archive, Texas Tech University, <a rel="nofollow" class="external free" href="https://www.vietnam.ttu.edu/virtualarchive/items.php?item=22730107005">https://www.vietnam.ttu.edu/virtualarchive/items.php?item=22730107005</a>, Accessed 12 May 2023.