Hi,
I am a bit late to this enquiry but can confirm that you have indeed cracked it. This vehicle is a 1905 Stanley Steamer Model E. This Model was manufactured only in 1905 and is recognisable by having a coffin-nose curved type bonnet but one which has a flat top rather than a sloping top. Also recognisable by the louvres in the bonnet which has three hinges, and by having no steering wheel. The Model E had a 10HP 2 cylinder engine of 56.c cu ins and was the last Stanley to have tiller steering. The body style is described variously as a Gentleman’s Speed Roaster or Runabout.
The photo seems to be depicting the car being filled up with water at some sort of well. A child seems to be minding the hose sucking up the water and the driver is ensuring it goes into the reservoir. The lady, sitting in the trird dickey seat at the back is blissfully sitting back under a parasol. House in the background may have nothing to do with the owner?
Regards
Vintman