The Great Circle Mapper no longer accepts donations via PayPal due to poor fraud prevention by PayPal and consequent lost time and money.
If you'd still like a make a donation, please e-mail for details about donating via a check payable in U.S. dollars.
Information on this site may not be accurate or current and is not valid for flight planning or navigation. No warranty of fitness for any purpose is made or implied. Flight planning and navigation should only be done using official charts.
Copyright © 2004-2018
Karl L. Swartz.
All rights reserved.