"As the mail line contains money, preclear and student applications and is in effect the income line of the organization, it must be secure in the extreme.

"The mail opener opens all mail, whether personal or otherwise and no matter how marked on the cover, which is addressed to the organization or its personnel – excepting only mail for students and/or preclears, and packages. Example: Any letter addressed personally to a staff member and received at the HASI, even though marked personal, would be opened. (This regulation has been found important in this London operation three years ago.) (This discourages receipt of personal mail by staff at business address.)"

[Note: The above P/L was modified by HCO P/L 7 December 1970, Guardian's Office Mail, page 179. The original issue 3 August 1956 appears in Volume 3, page 271.]