Very old Oleograph..Need Help/Info

[TJE]

Hi folks, this artwork is 'Large'..as you see in one photo there is a person holding it up! appr. 28 inches width by 47 inches length. Long story short..it was a gift to my grampa in 1920-30s for drilling a water well on an old farm for a lady who's husband had passed and she couldn't pay for the well (Grampa drilled it for free)..anyway, it has no writing front or back, on old canvas. Been told 30 yrs ago..'it was an 'Oleograph'. Any help/info would be Great!
Thanks in advance.

 

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