A prospector named Jack Thornton had been prospecting many creeks around the city of Greenwood, British Columbia.

In 1967, May Jones, one of Thornton's surviving daughters left an account at the Greenwood Museum.

[5] Local historian Bill Barlee speculates the lost mine could not have been Rock Creek or its tributaries such as Jolly, McKinney and Baker because that round trip would require two days travel from Jack's Cabin.

[6] Bill Barlee believes the area where Jack found his gold was Fourth of July Creek with its tributaries.

A local prospector in Greenwood named Peter den Hartog claimed he found Jolly Jack's lost mine.

[7] Some local prospectors believe Jolly Jack had gold stashed from older claims he once worked.

[9] In 1865 Jolly Jack wing-dammed a location where Salmon Creek emptied into the Pen d’Oreille near junction with Columbia at Fort Shephard.