Denver County, History of Colorado, BIOS: HEINZMAN, John D. (published 1918)
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"History of Colorado", edited by Wilbur Fisk Stone, published by The S. J. 
Clarke Publishing Co. (1918)  Vol. II

p. 82-83


JOHN D. HEINZMAN.

	A spirit of progress and enterprise has actuated John D. Heinzman 
at every point in his career and step by step he has worked his way 
upward until he ranks with the leading business men of Denver, where he 
is widely known as the president and manager of the Centennial School 
Supply Company, conducting an extensive business in school, church and 
opera house furniture and also school supplies. There has been nothing 
spectacular in his career and there are no esoteric phases in his life 
record. He has won his success through close application, persistent 
energy and untiring effort.

	He was born in Prairie City, Illinois, October 27, 1862, a son of 
Frederick and Frederica (Buehler) Heinzman. The father, who was born in 
Germany, was a mason, builder and farmer. He came to the United States 
in 1852, after having fought through the German revolution of 1848. As 
he could not win liberty in his native land, he resolved to come to 
"the land of the free and the home of the brave" and cast in his lot 
with the early residents of Prairie City, Illinois. Both he and his 
wife have now passed away. They reared a family of ten children, six 
sons and tour daughters, of whom eight are yet living.

	John D. Heinzman acquired a public and high school education in 
his native town and remained upon the home farm with his father until 
he attained his majority, early becoming familiar with the best methods 
of tilling the soil and caring for the crops. He afterward removed to 
Nebraska, where he engaged in farming on his own account for two years. 
On the expiration of that period he took up a homestead claim in 
Cheyenne county, Kansas, and on leaving that district removed to 
eastern Colorado, where he also secured a homestead. In 1894 he came to 
Denver, having already been a resident of this state for seven years. 
He became connected with his present line of business as commercial 
traveler for Thomas Kane & Company of Chicago, with whom he was 
associated from 1889. He was given the eastern counties of the state as 
his territory and later he traveled throughout Colorado and in Oregon. 
In 1905 he began carrying the stock of the J. D. Heinzman Company and 
in 1908 merged his interests with those of the Centennial School Supply 
Company, of which he is the president. In this connection he Is at the 
head of a very extensive and growing business, carrying a large line of 
school, church and opera furniture and school supplies of all kinds. 
The company has a warehouse of its own and handles a very extensive 
stock, selling largely throughout Colorado, Wyoming and New Mexico. The 
company also manufactures and handles kindergarten materials. They have 
a very extensive school supply business, built up along the legitimate 
lines of trade, and Mr. Heinzman has contributed in very substantial 
measure to the success of the enterprise.

	In December, 1896, occurred the marriage of John D. Heinzman and 
Mary Edith Bruce, a native of Mediapolis, Iowa, and a daughter of David 
R. Bruce. Fraternally Mr. Heinzman is connected with the Independent 
Order of Foresters, the Travelers Protective Association of America, 
and he has membership in the Rotary Club. He is an active worker and 
faithful member of the North Denver Presbyterian church, is chairman of 
its board of trustees and gives active assistance to various lines of 
church work. He is especially interested in the organization known as 
the Gideons and is its state secretary. This organization is doing 
Christian work among traveling men and placing the Bible in all hotels. 
Every avenue for effective work along the line of moral progress 
awakens his interest and his efforts of that character have been far-
reaching and resultant. Moreover, his entire career illustrates the 
fact that success and an honored name may be won simultaneously.