eternal1966e watering cart

Eternal1966e carries a photo of a "watering cart" dated 1915. It looks very similar to the one in Moddseys 1919 photo and similar to the one in the earlier pic from David/HK History Museum, except the 1915 and 1919 carts have two sets of wheels and are pulled by animals rather than humans. The strong similarities between the three carts suggest they are earlier and later versions of the same thing, i.e. watering carts.