What faces, and hats--with feathers like wings, and then ears like wings on the men! I love those toothy smiles too. I might guess a portrait of a group of church goers,  and they look perhaps ready to burst out in song. No message on the back but it was postmarked  March 30, 1909 (with a good cancellation)--mailed to Lebanon Kansas, famous for being the geographic center of the 48 contiguous states, currently with a population of 178.

5 1/2" x 3 1/4". Good condition, with some toning visible at the corners, which are a bit darker, and one small ink smear to the hat of the woman at center.