Born in Canada in 1862, Gebo grew up near Ogdensburg, New York, and lived briefly in Minnesota before settling in Montana in the early 1890s.
After the death of Henry Frank in 1908, the Canadian American Coal and Coke Company was reorganized into the Canadian Consolidated Coal Company with Gebo as its managing director.
It included a large brick house and a 9,000 square foot barn (National Register of Historic Places #5000512; Jun 01, 2005).
Under pressure from an indictment on federal land fraud charges in Wyoming, Gebo abruptly left for Guatemala (where he developed a marble quarry) in 1913, and his Fromberg ranch was put up for auction.
Gebo retired to Seattle in 1927 with his second wife, and he died in 1940 at home from a gas-leak.