April 18, 1967 by Caroline Letkeman FOIA Correspondence (April 18, 1967) File/Ref. No.: OMPF-LRH-05-020; OMPF-LRH-05-021; OMPF-LRH-04-041 Download: OMPF-LRH-05-020.pdf Download: OMPF-LRH-05-021.pdf Download: OMPF-LRH-04-041.pdf