TLS, one page, 8 x 10.5, Federal Bureau of Investigation letterhead, August 11, 1965. Hoover writes George C. Robb at the FBI office in Oklahoma City in a letter marked “Personal.” In full: “I have received your suggestion concerning a means to indicate title changes on intraoffice communications. After careful consideration it has been decided that such a method is not needed since our instructions with respect to indexing material in correspondence should be sufficient to insure that all necessary information is indexed. Although your idea was not adopted, I appreciate your interest in submitting it to me.” In fine condition, with scattered wrinkling. RRAuction COA.