A letter to Police Lieutenant General Phot Phekanan, commissioner of the Central Investigation Bureau (later Director General of the Royal Thai Police Department). The letter was undated, though the envelop was stamped with the postal mark of the Ratchadamnoen Post Office dated 2 June 1970.
Unknown (the following were named at the end of the document: Police Colonel Manit Manotwong, Police Lieutenant Colonel Thammanun Inthuset, and Kheng Wichitchanya)
รัชต ไตรเดชาพงศ์. (๒๕๖๔, ๓ สิงหาคม). <i>[ไม่มีชื่อ]</i>. สืบค้นจาก <a rel="nofollow" class="external text" href="https://web.facebook.com/photo?fbid=4568185643205365&amp;set=pcb.4568185696538693">ลิงก์ <span style="font-size:90%;">(dead)</span></a>.