Unk. Soldier Cal. or TX Connection?

I rescue old photos from antique shops and auctions. This Soldier's photo I obtained from an auction in Calfornia. When I received it, it came with other photos, which had identification on them. Carol MANN-a Sailor from probably WWI, has a TX connection, found him in the census. The photo was taken in California. Along with this photo was two of a female, from Houston, TX named Elwyn SHARP.

Somehow these photos all ended up in California.

This photo is in a card board frame and there is no identification at all on it. The photo can't be removed from the frame, without damaging it.

If he can be identified, I'd like to get him back into the hands of family. All I ask is what I have into it, including postage.