More than 17 census records are available for the Corson family, from both 1901 and 1911.
Sample 1901 Yale and Cariboo census records about the Corson family available from Ancestry.ca:
A Corson family household of at least 7 members residing in the district of Yale and Cariboo was recorded in 1901. The head of household, Douglas Corson, was born in Ontario in 1863. He identified his heritage as Scotch. By 1901, at the age of 37, he had an occupation that was recorded as "Physician". Douglas's wife was Charlotte M Corson, who was 34 years old. Charlotte was born in Ontario in 1866. She also identified her heritage as Scotch. Douglas and Charlotte had 5 children, 4 boys and a girl. In 1890 their eldest child, a boy named Thos, was born. Three years later, in 1893, when Douglas was 30 years old and Charlotte was 27 years old their second son, who was named Kenneth, was born. Then, in 1895, with their two older sons ages 5 years and 2 years, their third child, Marion, was born. In 1901 another son, their fourth child and third boy, George, was born. With four other children in the household, their fifth child and fourth boy, Wm, was born in 1899. Thus, at the time of the 1901 census, this Corson family household was filled with 5 children whose ages were 2, 3, 6, 7, and 10 years.