... Reference Letter . To Whom It May Concern To Whom It May Concern: TO WHOM IT MAY CONCERN: LETTER OF REFERENCE FOR: Ivan Ivanov I have been asked to write in support of Mr. Ivanov candidacy for and I am pleased to do so It is with great pleasure that I submit to you my recommendation of .. It is a pleasure to provide a letter of reference for Ivan Ivanov. ... I have come to know Ivan Ivanov well during the past year I have worked with Ivan Ivanov from October 1990 to May 1992 as a .. ...