1? (b) Any official who, at the close of the 1938 season, will have worked, during the seasons of 1935 to 1938 inclusive, in a minimun of five gancs shall be cligible for Class A classification. CLASS B (a) Any official who has worked in at least one game during the past three years, or will have worked at the close of the 19358 season, in a minimum of one game, shall be eligible for Class B Classification. (bo)