USA Pioneer Aviation Meeting Postcard, Help With Location.

I suppose it is the USA, but there is no indication on where it is. Any ideas?

The only real clue is the wing markings. I see "M"(?) "ER."

The mountains give a clue that it's not in the eastern U.S.

I'm guessing it is a Curtis 1912 Pusher Bi-plane. Location is likely Tucson AZ or NE.

I appreciate all of you taking the time to help identifying.
I will try to search with all the new input.

I'm guessing the lettering a the bottom of the bi-plane reads "MILLER". There were a couple of men by that name that were involved in pioneering aviation in the 1910s. It may be a clue, though.

wt1, I think you were almost right, it may be a name, but the second letter looks more like U, so Muller instead of Miller.
I just found this about a Muller:
•Jacques Muller (*1881 †1956)
Aircraft constructor and pioneering pilot between 1910 and 1920. Living in Salinas, Kansas, Jacques Muller built one of the first airplanes in the US in 1910. The plane was named "Prairie Eagle". On 18 July 1910 he patented a propellor, on display nowadays in the Smithonian Institute in Washington. He founded his own company called "Jack Muller Aeronautical Enterprises". World War I started whilst he visited Luxembourg in 1914. He decided to stay in Luxembourg and became a pioneer of the paint industry, registering several patents for anti rust paint.

Now I will try to find some pictures to see if it matches.