Education and early years Crocker was introduced to the
Young Men's Christian Association (YMCA) by his friend Lyman Archibald, who was general secretary of the YMCA in St. Stephen. Archibald helped Crocker build his physique by a routine including exercise and gymnastics, and competing at
track and field events. As Crocker became proficient at the events, he helped demonstrate to other athletes. He was elected to the
physical education committee of the in 1891, and became chairman of the committee in 1892. He organized annual
Victoria Day track and field meets at the local horse racing track, and won most of the events himself. Crocker attended the
International YMCA Training School in
Springfield, Massachusetts, prior to beginning full-time YMCA work. He was a student of
James Naismith, the inventor of basketball. In 1894, Crocker transferred to the YMCA in
Amherst, Nova Scotia, as the secretary and physical education director. In Amherst, he established a basketball program, introducing basketball to Nova Scotia after the game appeared at the
Montreal YMCA in 1892. During this time, he participated in multiple events at the Maritime Athletic Association championships, and competing in the
pole vault using a homemade pole. His personal best results in the pentathlon were a total score of 481 points; 10.5 seconds in the 100 metres sprint, in the pole vault, in the high jump, in the
long jump, 4 minutes 48 seconds in the mile run, and 2 minutes 2 seconds in the half-mile run. In 1898, Crocker began attending
Dalhousie Medical School. He directed summer boys' camps in Nova Scotia during 1898 and 1899, including a stay at
Big Cove YMCA Camp. He abandoned medical studies at Dalhousie in 1899, due to vision problems. He instituted the practice of gymnasium uniforms, and a
physical examination for participants to track their health and progress. He arranged for annual indoor athletics competitions between local YMCA branches, and oversaw recreational programs for baseball, basketball, fencing, gymnastics, lacrosse, rugby football, swimming and lifesaving, track and field, and wrestling. In 1901, Crocker established a YMCA Leaders' Club to physically and mentally challenge talented athletes. The framework for this program set the standards for what became the National YMCA Leaders' Corps. Among the 18 members of Crocker's inaugural Leaders' Club included Olympic racewalker
Donald Linden. Crocker later operated summer camps for the Leaders' Club on
Lake Scugog and
Lake Couchiching. Crocker began conducting annual seminars for physical education directors in 1901, to raise the standards of instruction in Ontario. He directed classes in track and field, lifesaving, swimming, and gymnasium routines. By 1905, the courses were combined into YMCA summer camps operated by Crocker at
Geneva Park on Lake Couchiching. In 1901, Crocker selected an all-Ontario basketball team to represent the province at the Sportsmen's Congress annual meeting in
Chicago. He promoted growth of basketball in Canadian newspapers, published expert notes on playing basketball, and stressed the need for clean play and skills practice. In 1905, he represented the Toronto Central YMCA team in the newly formed senior division of the Canadian Basketball League. Crocker led efforts to establish the YMCA Athletic League in 1904, which organized and promoted sport between YMCA associations. He was named secretary-treasurer of the YMCA Athletic League in 1905, which affiliated with the YMCA Athletic League of the United States. He subsequently wrote the ''Official handbook of the Athletic League of the Young Men's Christian Associations of Canada''.
Brantford general secretary Crocker began working as the general secretary of the
Brantford YMCA in December 1908, following a brief period in the
real estate business. Crocker oversaw renovations to the pool at Wycliffe Hall, then conducted swimming lessons for members and the public. He also established
first aid courses for the YMCA, and instructed classes in basketball,
calisthenics, and gymnastics. in addition to refereeing some games. He was a course clerk for athletics events, and arranged the 1910 YMCA national athletics championships hosted in Brantford. In 1910, he was elected president of the newly organized Brantford YMCA swimming club, to arrange
water polo teams and games, and was a judge for swimming competitions. The Brantford YMCA organized a
junior ice hockey league including five teams for the 1908–09 season, with Crocker elected as vice-president. For the 1909 season, he was elected president of the Brantford Junior Baseball League, which included a team from the YMCA and set an age limit of 19. In the annual
racewalking event sponsored by the
Brantford Expositor, Crocker fired the
starting pistol, served a course judge, and was an expert on the Olympic rules for the event. He was also involved in local sports as an on-field official for athletics events, as a starter and timekeeper for bicycle races, and the Brantford-to-
Hamilton marathon race. Crocker regularly led
bible study classes at the YMCA and local churches, and was a guest speaker at churches, on the subject of brotherhood. He conducted services at Sydenham Street Church in absence of its pastor, and when the Reverend Maxwell was absent due to illness, Crocker filled in at the pulpit with an address on "The Vision of Jesus Christ". Membership in the Brantford YMCA grew from 100 people when Crocker began, to 800 by 1912. To replace the aging Wycliffe Hall opened in 1873, Crocker helped design a larger building, and led fundraising efforts for a new building completed in 1912. The new facility included a gymnasium, swimming pool, bowling alley, billiard room, reading room, classrooms, and dormitories for 100 residents. He served as the foreign work secretary to promote physical education based in
Shanghai, the headquarters of all YMCA work in China. When he first arrived in China, the YMCA had facilities in large cities, but lacked a nationally co-ordinated effort. He also led efforts for construction of Shanghai's first major sports stadium. Crocker wrote that it was impossible to establish new operations due to the revolution, and that he was concerned for the physical and mental health of young men in China. In 1911, he arranged the first school for physical education directors in China. Later in the same year, he was named national secretary of physical education in China, when the YMCA erected new buildings in
Canton,
Fuzhou,
Hankou,
Beijing, and
Tianjin. In 1912, the YMCA erected a new building and sporting field in
Nanjing. Crocker aimed to construct separate buildings each for the English-speaking men, the Chinese boys, and national committee offices. As of 1912, Crocker focused on conducting gymnasium classes, and introducing
volleyball to schools and YMCA locations in China.
International sports Crocker aspired to send athletes to represent China at the
1912 Summer Olympics, but abandoned hopes due to the political changes following the 1911 Revolution. Canadian missionary Reverend Gordon R. Jones, credited Crocker as the driving force behind establishment of the Far Eastern Games, due to visits to Japan, Hong Kong and the Philippines to organize the event. Crocker used "The Joy of Effort" as a logo, a work by Canadian educator and athlete
R. Tait McKenzie. Crocker served as secretary of the
Chinese Olympic Committee , and was named manager of the
Republic of China team at the
1915 Far Eastern Championship Games.
Growth of physical education The Far Eastern games raised national interest in sports, and led to support by the Chinese government for physical education training. Crocker co-operated with the government's effort to organize student athletics at universities and colleges, During October 1915, Crocker went on a city-wide speaking campaign at schools in Tianjin to promote physical education, and advocated for women to receive equal education. The support he received led to similar lectures in
Baodingfu. The governor of
Amoy asked Crocker to develop interest in athletics, where he spoke at all schools and colleges in the city, and arranged interschool athletics events. When he urged local businessmen for funding to construct playgrounds and employ an athletic director, money was pledged immediately. In
Jiangsu, he and YMCA colleagues conducted courses to educate more physical education instructors. He published athletic literature in English and Chinese, including manuals for volleyball, indoor baseball, tennis, soccer, track and field; and manuals on how to set-up a
sports governing body. Due to increasing demands for physical education, Crocker noted that the YMCA needed more general secretaries to manage training for the required teachers. Expansion plans into Tianjin and
Canton were combined with construction of training schools for secretaries and physical education teachers. He felt that the YMCA's future in China depended on securing and training men for the work, and Shanghai subsequently became the first training centre for physical education directors in China. He took a leave of absence from his work to spend the summer in Canada, to study and accumulate resources for further of training physical education directors, and attend YMCA conferences in
Chicago and
Cleveland. Due to the situation in China during the
Warlord Era, the International YMCA committee recalled Crocker to Canada in October 1917. During his time in China, Crocker also promoted
reforestation, and helped distribute tree seeds from Canada. He summarized his tenure by writing, that the only progress in physical education in China had come via efforts of the YMCA.
Central-West Canada general secretary Upon returning to Canada, Crocker worked on special projects for the YMCA national council, and lectured about the effects of war in China. He was a recurring speaker at YMCA conferences to support the
World War I effort in Canada. He appealed to the Canadian public to support programs, when the YMCA was depleted in numbers due to men serving in the war, and was an executive on the "Help Win the War Campaign" launched by the citizen's committee of the YMCA in
Brandon, Manitoba. He oversaw fundraising to support the war effort and Canadian troops, and received an endorsement for his work from Lieutenant General
Richard Turner. In October 1917, the YMCA of national council Canada restructured into four territorial committees due to growth in Western Canada. Crocker was offered the general secretary position of the Central-West division, which included
Saskatchewan,
Manitoba, and
Northwestern Ontario. Crocker began work in the position on January 2, 1918, and established his office in
Winnipeg. He associated with the
Winnipeg YMCA, where he served as acting secretary of the club . Frequently travelling Western Canada to interact with physical education directors, Crocker implemented YMCA programs despite austerity measures during World War I. He lectured regularly on physical education at YMCA events, and arranged volleyball competitions among YMCA branches in Manitoba, while coaching the team from the Winnipeg Central YMCA. As secretary of the YMCA's Red Triangle Fund to benefit education for boys, Crocker oversaw fundraising for missions around the world, including China and India. During the
Winnipeg general strike in 1919, he recruited neighbourhood boys and YMCA members to staff local firehouses around the clock. In 1919, Crocker announced plans for a summer campaign to improve living conditions on
First Nations reserves. He also sought for the YMCA to assist
church missions for First Nations people in Manitoba and Saskatchewan. At the 1920 annual general meeting of the Central-West division, Crocker forecast expansion into industrial and rural fields, and co-operation with other organizations and churches. He collaborated with the
Rotary Club to implement work programs for boys in Winnipeg, and was a guest speaker at summer leadership courses for ministers and church members working for the YMCA.
National secretary for physical education Returning to
Toronto in August 1921, Crocker accepted the position of national secretary for physical education. He supervised all YMCA physical education directors in Canada, travelling across the country for annual inspections. He oversaw national standards for physical education programs, and was a liaison with university and college leagues, secondary school leagues, and other sports governing bodies. He was responsible for training physical education directors at summer schools, and lectured at training classes for mentors. He advocated for Canada to follow the International YMCA model for developing leaders, and for increased attendance at leadership courses. Crocker was a recurring speaker at YMCA location across Canada, where he promoted physical education, and lectured on the history of the Olympic Games. He spoke often on the history of
Canada at the Summer Olympics, and advocated for Canada to send female athletes to international events. Crocker was a recurring referee at the Ontario YMCA volleyball championship tournament, and at international YMCA tournaments hosted in Ontario. When the Ontario Volleyball Association was established in 1928, Crocker represented the YMCA which included six cities. Physical education programs made by Crocker followed a "whole man" concept, rather than attempt to produce an athlete. In 1921, he helped establish the Physical Directors' Society of the YMCA in Ontario, to co-ordinate a province-wide physical education program. As the national secretary, he reviewed all proposals submitted for discussion at YMCA general meetings. He introduced
sex education summer program to the Physical Directors' Society in 1925, stating that "our teaching should have both elements of truth and love". He also urged for physical education directors to be aware of local laws on
birth control. and remained in an advisory role on the national physical education board of the YMCA until his death. He was named to Brantford's advisory board, and was a delegate to the annual meeting of the national council of the YMCA. ==Royal Life Saving Society Canada==