Always have had a thing for the old Indians. My Granddad started his Indian Motorcycle Sales & Service, back in 1932 and when my Dad left High School, he stared working there, as well. Although it isn't a Four, I have posted a photo of one of the Indians my Dad had, back in the days, before I came along. I forget the actual model of this one, but it began life as a Military model, that a number of G.I.s brought home & swapped out the bodywork, for Chief Tanks & Fenders. I keep forgetting the model it was though. Just thought some might be interested to see a different Indian, that a lot don't even know about.
Update: it was called a: Model 841 (Shaft Drive V-Twin, turned crossways, like a Moto Guzzi.