.30-30 Savage Model 99F Albert Johnson (c. 1890–1900 – February 17, 1932), also known as the Mad Trapper of Rat River, was a fugitive whose actions stemming from a trapping dispute eventually sparked a huge manhunt in the Northwest Territories and Yukon in Northern Canada.

At that time many northern native traditional trapping areas were being invaded by outsiders fleeing the Great Depression and some complaints may have been intended to remove him.

In December, indigenous trappers complained to the local RCMP detachment in Aklavik that 'Johnson' was tampering with their traps, tripping them and hanging them on the trees.

[3] A posse was then formed consisting of nine men, 42 dogs and 20 lb (9.1 kg) of dynamite which they intended to use to blast Johnson out of the cabin if necessary.

In desperation, the RCMP hired First World War flying ace and leading post-war aviator Wilfrid "Wop" May of Canadian Airways to help in the hunt by scouting the area from the air.

[citation needed] He noticed a set of footprints leading off the centre of the frozen surface of the Eagle River to the bank.

Johnson had been following the caribou tracks in the middle of the river where they walked in order to give them better visibility of approaching predators.

[citation needed] Walking in their tracks had hidden his footprints and allowed him to travel quickly on the compacted snow without having to use his snowshoes.

[citation needed] The pursuit team rounded a bend in the river to find Johnson only a few hundred yards ahead, standing in front of them.

[citation needed] A firefight broke out in which RCMP Constable Alfred King was seriously wounded and Johnson was killed after being shot in the left side of the pelvis at an acute angle.

Seventy-five years later in 2007, forensics teams found that his tailbone was not actually symmetrical, causing his spine to curve left and right slightly.

[citation needed] The RCMP sent a series of photographs throughout Canada and the United States in an unsuccessful effort to learn his real identity, which has never been definitively established.

[6] In the 1930s, the initial investigation about the identity of Albert Johnson primarily focused on an obscure individual named Arthur Nelson.

"Johnny Johnson" was born Johan Konrad Jonsen (1898) in Bardu Municipality in Norway, north of the Arctic Circle.

[9] In August 2007, a forensic team assembled by Myth Merchant Films located and exhumed Johnson's grave near the cemetery in Aklavik, then conducted a modern forensic examination on his remains; these were documented in the documentary film The Hunt for the Mad Trapper[10] and the book The Mad Trapper: Unearthing a Mystery by Barbara Smith.

[2] This team found that isotopic analysis of his teeth suggested he may have grown up in Scandinavia or the U.S. Midwest, that he had scoliosis which would have led to chronic back pain, that he was approximately 35 years of age, and that he had been struck multiple times in his final gun battle including his leg, thorax and a debilitating shot from behind through his pelvis.

[2][10] After the examination his remains were re-interred with full religious rites by both the local priest and native elders, something that had not been afforded to him at his original burial.

[10] While many people had offered convincing circumstantial and anecdotal evidence that they were related to him, the DNA analysis ruled out all of the candidates and his identity remains a mystery.