[xliii] Ruth was introduced to Marina Oswald because geologist Everett Glover knew that she was studying Russian with the hopes of becoming a teacher: Testimony of Ruth Hyde Paine, 3/18/64, Warren Commission Hearings, Volume 2, page 432-434.
http://www.maryferrell.org/mffweb/archive/viewer/showDoc.do?docId=38&relPageId=440
[xliv] Ruth went so far as to tutor one young student in Russian during 1963: Testimony of Ruth Hyde Paine, Warren Commission Hearings, Vol. 3, p. 137.
[xlv] Mamantov was a Dallas White Russian whose mother-in-law, Dorothy Gravitis, had previously given Paine some private Russian lessons, heard Ruth Paine speak Russian and was frank in assessing her command of the language as "very poor", even for an American: Testimony of Dorothy Gravitis (comment by Ilya Mamantov, translator), Warren Commission Hearings, Vol. 9, p. 119.
[xlvi] A "spot report" from Dallas says that Mamantov came on the scene only after Army Reserve officer contacts was contacted and asked for assistance: Paul Hoch, "The Final Investigation? HSCA and Army Intelligence." Third Decade, Volume 1, Issue 5.