Concrete arrows used to guide airmail planes to their destination.  We have a little bit of that history still pointing the way in Minnesota.  You can click here to read about it and work the special event station on September 9th.

09/09/2017 | Air Mail Marker Memorial

Sep 9, 1400Z-2000Z, K0A, St. Paul, MN. South East Metro Amateur Radio Club. 14.265 7.265. Certificate. Dick Roberts, 1655 68th St W, Inver Grove Heights, MN 55077. www.semarc.org