Now that I know this is a Hupmobile I was just looking at the photos of early Hupmobiles in the "Standard Catalogue of American Automobiles" by Kimes and Clark and it appears to my eye that this may be a 1912 model because of the windscreen and folded down top. Would I be correct in this? And would it be possible to tell which model it might be. According to this catalog there were 4 models: three were called Model 20 - the Runabout, the Roadster and the Coupe. And the fourth was called a Model 32 Torpedo.Tr-4P. From what I can see in the photo it appears to be a two seat model so I would expect that would make it one of the three Model 20 variants rather than the Model 32 which seems to be a 4-seat model.
And thanks to everyone for your help - I and my family appreciate your generously sharing your expertise.