Adopted 6 June 1922 as recommended by BC Geographic Division and as labelled on the Royal Engineer's preliminary map of the International Boundary, March 1862; and on Epner's 1862 Map of the Gold Regions of British Columbia; and on Trutch's 1871 map of British Columbia, etc;, not Baker Creek as labelled on BC Reference Map 7B (date not cited).

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office

On September 6, 1958 a cairn was erected beside the creek, where placer gold was discovered 100 years earlier. Thousands of miners, Americans & Chinese among them, in a flurry of activity, recovered over $200,000 in gold from this small creek. A time capsule containing historical data of the Boundary District, and sealed within the cairn, will be opened in September 2058.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office

Note that the north fork of Rock Creek (into which today's Jolly Creek drains) had been labelled "Jolly (Rock) Creek" on BC map 1EM, 1915 and was adopted as Jolly Creek 6 June 1922 on BC map 4K. A 1952 field check identified this fork as the main stream, widely known as "Rock Creek", not Jolly Creek. The name "Jolly Creek" was moved to the upstream tributary as used by local residents. Confirmed 28 October 1959.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office