Yes to confirm gasoline on Lake Gogebic: Hoop n Hollar on the North end, Mobil and BP in Bergland on North East side of Lake Gogebic, Root Cellar on East Shore of Lake Gogebic, Fish Tales and Gogebic Lodge on the West Shore of Lake Gogebic. South of Marenisco there is gas in Presque Isle WI, East of Marenisco in Watersmeet there is gas.
Only real concern about gas these days is in Silver City make sure you top off before you head to lake of the clouds then head to White Pine where Konteka has gas.