Here is another bit of info that might help. The location appears to be an orphanage and money was probably a little tight to be hiring a professional photographer. The print does not appear to be a large format studio camera type of print. The Kodak P1 and P1A came out in 1926, I believe. It was the first personal camera available to the general public. You didn't mention the size of the print, but the P1 used A116 film. What we would call medium format today (about 4X5). I would suggest that your photo was probably taken with a similar camera.