[RF 15A, 20A-20C, 21A were also issued. This set of charts covers United States and a portion of Canada. Table of stations, aids to navigation, etc., on reverse side of each chart. Issued with perforations.]
Notes:
[RF 15A, 20A-20C, 21A were also issued. This set of charts covers United States and a portion of Canada. Table of stations, aids to navigation, etc., on reverse side of each chart. Issued with perforations.]