U.S. Parcel Post stamp of 1912
... that the 20-cent U.S. Parcel Post stamp of 1912 had the distinction of being the first stamp in history to depict an airplane, six years before the U.S. Post Office issued an airmail stamp?
... that the 20-cent <b id="mwAmg"><a class="mw-redirect" href="./U.S._Parcel_Post_stamps_of_1912-13" id="mwAmk" rel="mw:WikiLink" title="U.S. Parcel Post stamps of 1912-13">U.S. Parcel Post stamp of 1912</a></b> had the distinction of being the first stamp in history to depict an airplane, six years before the U.S. Post Office issued an <a class="mw-redirect" href="./Airmails_of_the_United_States" id="mwAmo" rel="mw:WikiLink" title="Airmails of the United States">airmail stamp</a>?