Letter Regarding Annuity to Harry Garfield Polly of Minot, North Dakota from the Railroad Retirement Board. Dear Sir: You are hereby notified that the following record of service prior to January 1, 1937 and of the compensation (not exceeding $300 in any one month) earned by you in months during the period 1924-1931, inclusive, for which compensation reports were received by the Board, has been established for you on the records of the Board.