The home of Vintage and Classic Motorcycles.....

Thanks to Elizabeth Bowers for this picture of her great uncle, Henry 'Harry' Bowers.  The rear of the picture is inscribed "1912 Indian".

And thanks to Leon for confirming the identity of the bike:

"Yes, 1912 I think: 4 h.p., 30.50 cubic inch (499 cc) “Regular Model” (single speed with clutch). Unlike this one, 1911 models used the open magneto, and had no extension to the front guard in front of the fork spring. By 1913 it is said all Indian models used the spring frame"