My comments on size related, principally, to the depth, rather than the width, of the fuselage. Whilst making no admissions as to the assertion that, a century ago, people were generally slimmer, I don't think that the same can be argued for their height and, more specifically, their leg length. But I suppose it can be argued that the pilot may have sat with his legs in a horizontal position - or even that it was flown by a prone pilot!
Are the dimensions of the extant propeller known?
P.s. can you, Mechta, provide a hyperlink to the other forum where first this photograph appeared?