I just picked these up today at a local show and would like some help identifying the officer that owned these. Both helmets are soft leather and made by Spalding and have information about the owner painted onto them. One helmet also has a beautifully rendered set of wings painted across the front.
Both are named to a Captain John H. Hunter US Air Service AEF.
And on another forum a member found a General John Heard Hunter who served with the Air Service in WWI:
The first helmet which has Captain Hunter's name marked twice, once as a First lieutenant and then as a Captain: