The following data is extracted from History of the Pacific Northwest, Oregon and Washington, 1889.
HENRY BROOK. - The record of this gentleman is not only a satisfactory commentary upon his own business capacity, but also upon the dimensions of the business of the city, and a scale of its enterprises, since his coming here in 1883.
Mr. Brook was born in England in 1842, and came to America in 1870, locating at Minneapolis. He reached Spokane Falls in 1883, doing since that time a very successful business. In 1885 he was elected a member of the city council, and while in that office favored the measure to buy the waterworks and furnish the people water at cheap rates. He is no less enthusiastic than his neighbors in his confidence in that city. He is married and has a family of six children.
Source: History of the Pacific Northwest, Oregon and Washington, 1889