May 2018 represented the 100 year anniversary of thefirst United States Airmail Stamp and the first Governmental Airmail Service conducted on May 15, 1918. Please visit the Airmail 100 Years page where you can download a 5 Frame and 6 Frame presentation which commemorates this major milestone in United States Aerophilately.
These two exhibits will be shown at many APS stamp shows in the next year or two.