Here's what I can find on Cameron.
Pre-NHA
Cameron played for the Pembroke Debaters as an amateur from 1908-11. He first went pro with the Port Arthur Lake City team of the Northern Ontario Hockey League. Very little information is available about these years, other than that Cameron insisted that teammate and boyhood friend Frank Nighbor also be offered a pro contract.
1912-13
Cameron entered the NHA with the Toronto Blueshirts, and made an immediate impact. It's noteworthy that while Cameron was the spectacular rusher from the back line, it was coach Jack Marshall's role as a stabilizing force that allowed Cameron to be maximize his talent.
The Toronto World 1/16/1913
Marshall and Cameron made a defence that could not be improved upon. Cameron got the hand [ed: applause] several times for his individual rushing.
The Saskatoon Phoenix 1/17/1913
Coach Jack Marshall got into a uniform and made a great improvement to the defence with Cameron. The latter's rushing was sensational... Cameron, Wilson and Neighbor (sic) were Toronto's stars, with Marchand playing brilliantly in goal.
The Toronto World 2/6/14
Harry Cameron was again the favorite last night. His lone rushes are regular things every night the Torontos play at home.
The Toronto World 2/10/14
Harry Cameron electrified the crowd time after time with his rushes and Marshall kept taking the puck away from his opponents until they looked rather sick.
The Toronto World 2/17/1913
The Torontos displayed laxness at times, but Jack Marshall, who has proved himself the life of the team, time after time, was there with an opportune word, and kept the boys hustling. Alto he is not the best player on the team his generalship is the blue shirts' biggest asset. Nighbor was the star of the game...
... Harry Cameron put up a nice game, and his zig-zag rushes were always to the fore when things looked doubtful.
GP | G | A | P
20 |9| 0| 9
1913-14
The major change to the Blue Shirts this season was the departure of Frank Nighbor and adding George Macnamara as a substitute on defense. They gelled as a team and won the first Stanley Cup in Toronto hockey history. On this team, Cameron had risen to the point of being a legitimate star.
The Toronto Sunday World 2/22/1914
Cameron was the best man on the ice, and his all-round good work did more to put the locals on top than anything else. He scored one of the Torontos' goals and sent about ten more hard ones right at Vezina, who was forced to step lively to clear them. Every time a rush was started at his nets he was there in all his element, and he blocked and saved well. He did a lot of rushing also, and relieved in places when things looked dangerous.
GP | G | A | P
19 | 15 | 4 | 19
1914-15
Jack Marshall came down with appendicitis mid-season, and after his departure the Blue Shirts quickly dropped out of contention. Their 1-8 streak to finish the season is an indication of how important Marshall was to this club. His next game in Toronto would be as a member of the Habs.
GP | G | A | P
17| 12| 8| 20
1915-17
The sale of the Blue Shirts to Eddie Livingstone in 1915 signaled a turning point for the team and for Cameron's career. Judging by the amount of press coverage they received, the sorry team lost the attention of the Toronto hockey public. In turn, it's a lot more difficult to find details of Cameron's performance.
Cameron ended up briefly with the Montreal Wanderers after Livingstone's feud with the NHA led to the demise of the Blue Shirts.
Season | GP | G | A | P
1915-16 | 24 | 8 | 3 | 11
1916-17 | 20 | 9 | 5 | 14
1917-18
Cameron returned to Toronto when the Arenas franchise began play in the NHL. Around this time, he began to feud with manager Charlie Querrie. That feud would play out in the media and the court of public opinion, but Cameron proved a bit too valuable to be disposed of easily.
The Saskatoon Phoenix 12/27/1917
To Harry Cameron, Querrie's sterling defence player, belongs the lion's share of the credit. Three of the goals were directly due to his clever skating and stick handling, while he notched another on a pass from Meeking. On the defence he stopped Lalonde, Malone and Laviolette time and again, and on several occasions he out-skated the whirlwind "Newsy".
The Toronto World 1/29/1918
Cameron showed some of his old time form in rushing and played a fair defensive game.
The following three quotes are from the Stanley Cup Finial series between Toronto and Vancouver.
The Toronto World 3/27/1918
Cameron was the outstanding player for the locals. He rushed in his old time style and the game needed these thrillers at times to liven it up. The good defence man grabbed two goals himself and paved the way for two more.
... Cameron was especially brilliant with his rushes, and he dodged the checkers nearly every time.
... Cameron received a pass and set sail down the ice alone. He shoved the puck ahead of him and when he hit the defence, skated around Griffis, and then picked it up and beat Lohman from close range. It was a pretty goal.
Cameron rushed right back, passed over the defence, and sent the puck across the goal mouth, but Meeking failed to reach it.
... Cameron tore down, skated around the defence and passed to Skinner at the goal mouth. Lohman didn't have a chance to save.
... Cameron got this one back for the Toronto Club with a beautiful lone rush. When Cameron hit the defence he shoved the puck along, went on and grabbed it and scored.
A three-man Toronto rush was next in order and Cameron missed the net by inches only from a good pass.
The Toronto World 3/29/1918
Torontos were simply lost at the seven-man, no offside in centre ice stuff. Vancouver ran all over them with speed and had a bag of tricks that left the blue shirts gasping.
... Cameron was a strong rusher for Toronto, but had hard luck with his shots.
The Toronto World 4/1/1918
Individual rushes were the order, and the work of Cook and Cameron featured.
While it certainly would appear that he was less oustanding as the series wore on, Cameron appears to have been one of the only Toronto players to impress in every game and he was perhaps the single most important player in the first game.
Note the reference to rushing "in old time style". One gets the impression that he was seen as something of a relic at age 28, playing a rushing game that was increasingly less common among younger defensemen.
GP | G | A | P
21 | 17 | 10 | 27
1918-1919
The Calgary Daily Herald 1/31/1919
And the honor of netting the winning goal and of breaking up the big battle again fell to Harry Cameron who had already made himself famous by scoring the deciding point in the Ottawa-Toronto grind at the Queen City arena two nights before.
... Cameron took [Frank Nighbor's pass] perfectly, swerved slightly to his left and then let go a high shot which landed in the twine behind Vezina. ... Cameron kept right on skating after slamming in the goal which brought victory to Ottawa, and was in the dressing room, tired and panting before the majority of spectators realized that it was all over.
The quote above paints a nice picture of an offensive force in his prime. One gets a sense not only of the gracefulness of his skating, but that he had grown into that stage where players seem to operate at a level slightly above the opponent.
Cameron was briefly traded to Ottawa that season... alas, if any reactions to that trade exist in print I can't find them.
GP | G |A |P
14 | 11 | 3 |14
1919-20
This was an interesting season for Cameron. He returned from a brief sojourn in Ottawa. Querrie, his longtime nemesis in management, bought the team in December and renamed them the St. Patricks. Note the following series of events.
The Toronto World 12/24/1919
Mitchell was very good in the Toronto nets, while Cameron and Randall both furnished strong defence games.
The Toronto World 12/29/1919
[several others played well, as did] Cameron, tho the latter was not at his best owing to a bad gash he received in the preliminary practice when he crashed into the goal post with his head, requiring medical assistance.
Edmonton Journal 1/15/1920
Noble and Cameron were away below form. Cameron gave a listless exhibition and was taken out near the close of the first period. Immediately following the game the locals traded him to Canadiens for "Goldie" Prodgers.
The Montreal Gazette 1/19/1920
Harry Cameron, who was recently secured from St. Patrick's in trade for Goldie Prodgers, made his initial appearance with Canadiens and acquitted himself in a creditable manner. Cameron was not only used as a substitute defenceman, but was sent in to relieve players on the forward line.
The Montreal Gazette 1/21/1920
Cameron is playing better hockey with Canadiens than he did with St. Patrick's, and fits well into his new position.
Within a month's time he goes from solid, to severely injured, to listless, to expendable, to a success with a new team.
Brings a few questions to mind. Who the hell goes head-first into the goal post during warmups? Why was he so listless after that injury? Why was the team so quick to pull the trigger on trading a 5-year star? Was he in a concussion-like state, or something else along the lines of a Lionel Conacher situation? Or was he simply disinterested in playing for Querrie, who had the leverage to unilaterally send Cameron packing for the second time.
It's a very interesting drama indeed.
GP| G | A | P
23 | 15 | 5 | 20
1920-21
Cameron, of course, returned to Toronto the next season (more questions spring to mind) and appears to have been right back to form.
The Toronto World 1/24/1921
... Harry Cameron skated from goal to goal, shot and slapped in the rebound...
The addition of Sprague Cleghorn gave him a defense partner comparable steadiness to Jack Marshall, and the results were notably similar.
The Toronto World 1/25/1921
Cleghorn and Cameron will be a hard defence to score on. It was Harry Cameron's defensive work which helped materially to beat Ottawa in the overtime period. Harry saved the situation twice in the overtime period by good headwork.
... [Cleghorn] will steady the defence and improve the play of Cameron.
The Toronto World 1/27/1921
Cameron was also brilliant with his rushing, and was not adverse (sic) to giving or taking a pass. ... Cameron fitted in nicely with [Cleghorn] in the rushing.
GP | G |A | P
24 | 18 | 9 | 27
1921-22
With Cameron leading all defensemen in goals, assists and points, the St. Pats finished second in the league and beat the heavily-favored Senators in the playoffs on the way to the Stanley Cup. Unfortunately, much of the summary of the first game of the series is unreadable on the Google archive. It appears that Cameron had a hand in a controversial goal. In the second game, apparently played in "inches of water", the St. Pats played suffocating defense against a Senators club that could be described in Terry Murray's words as experiencing a choking situation. The Montreal Gazette seemed scandalized that the Cup would be defended by a team which was "not truly the best representative team of eastern professional hockey". I suppose we should take that kind of talk with a grain of salt, but it does say something about the degree to which the St. Pats stepped up their game in the playoffs while the juggernaut Sens faded.
Cameron was 3 points shy of Babe Dye for the team lead that season.
GP | G | A | P
24| 18 |17 |35
1922-23
The Calgary Daily Herald 12/2/1922
Cameron for the visitors stood out conspicuously in the already conspicuous performance of the St. Pats. All three of Toronto's goals went to his stick. He faithfully contributed one in every period.
... Noble, Denenny and Rye were responsible for some brilliant work and they were only prevented from piling up a handsome score by the work of Fowler. Old Harry Cameron was the only man that had Fowler's number.
... Then Cameron showed the lads something flashy and beat Fowler.
Cameron was clearly still a force to be reckoned with, but I think it says something when a player starts to be referred to as "old so-and-so" and talked about as showing "the lads" a trick or two.
This was his final season in the NHL. When the Pats missed the playoffs in 1923, Cameron departed for Saskatoon where, as I understand it, he made a transition to forward.
GP | G | A | P
22 | 9 | 7 | 16
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The following table shows the top 5 defensemen in scoring from 1917 through 1923. Note that it does not include two seasons (1914 and 1915) when Cameron was a point-per-game scorer.
Rk
|
Name
|
GP
|
G
|
A
|
P
|
PIM
1 |Harry Cameron | 128 | 88 | 51 | 139 |189
2 |Eddie Gerard|128 |50 |48 |98 |108
3 |George Boucher | 109| 50| 39| 89 |207
4 |Sprague Cleghorn| 100 |52| 33 |85 |257
5| Bert Corbeau | 127 |45 |30 |75 |291
Starting in 1917-18, Cameron led all NHL defensemen in the following categories:
1917-18: Goals, Assists, Points
1918-19: Goals, Points (tied with his partner Randall)
1919-20: Points (tied with his partner Randall) and 2nd in goals to Cleghorn
1920-21: Goals, Assists, Points
1921-22: Goals, Assists, Points
Best I can tell, Cameron was likely the premier puck-rushing defenseman in hockey during the early years of the NHL. He took the solo-rushing sensibility of early hockey and applied it to the "modern" game. The major weakness in his game was the need for a steady partner, a Marshall or Cleghorn, to give him a bit of space to roam. Still, he was by no means a one-way player and if we had plus-minus numbers from back then, they would probably show very favorably for him.