Two letters from the Research Department: one from 1984 identifies the source of the statement that 20,000 Bábís were martyred, and one from 2005 says that this source has not actually been found.
Notes
First letter also includes unrelated mention about enlistment in the armed forces; see more on this topic at uhj_police_army_weapons.
Both letters published (1984/1995) or submitted (2005) by and posted with permission of recipients.