MsC 850

Collection Dates: 1906 -- 1966

.5 linear ft.

Collection Guide

This document describes a Manuscript Collection held by the

Special Collections Department

University of Iowa Libraries


Steel worker pouring molten ore
Pouring steel at the Zimmerman Plant


Guide Contents

Administrative Information

Agency Note

Scope and Contents of the Collection

Acquisition and Processing Information



Administrative Information

Access and Restrictions: This collection is open for research.

Digital Surrogates: Except where indicated, this document describes but does not reproduce the actual text, images, and objects which make up this collection. Materials are available only in the Special Collections Department.

Copyright: Please read The University of Iowa Libraries' statement on "Property Rights, Copyright Law, and Permissions to Use Unpublished Materials"

Use of Collections: The University of Iowa Libraries supports access to the materials, published and unpublished, in its collections. Nonetheless, access to some items may be restricted by their fragile condition or by contractual agreements with donors, and it may not be  possible at all times to provide appropriate machinery for reading, viewing, or accessing non-paper based materials. Please read our "Use of Manuscripts Statement."

Agency Note

In 1895, W.C. Zimmerman founded the Monarch Grubber Company in Lone Tree in partnership with Miles Bateman. In 1908 it became the Zimmerman Steel Company. Originally, they bought parts for assembly at the plant, but in 1897 they began casting their own parts in a new building just south of the railroad tracks. This was the first steel casting plant in Iowa. In 1898 W.C. took Henry, his eldest son, into the business with him and he sent his daughter, Bertha, to Iowa City to the Irish Business College. The next year, at the age of thirteen, Bertha took over the business correspondence for the company. Eventually all of W.C.'s sons would come into the business.

In September 1906 the Zimmermans contracted for the electric franchise for Lone Tree. According to Henry Zimmerman, within three months, under the direction of his brother Fred, Lone Tree had electric lights.  In 1911 the Zimmerman Steel Company shipped steel products to twenty countries including Russia, Japan, and Australia. At its peak the factory employed fifty people in what were considered high-paying jobs. The family also owned a farm, which was near the large elm tree from which the town derived its name.

Henry L. Zimmerman was born in Davenport on July 25, 1879 and attended schools in Big Rock and Lone Tree, Iowa. According to a memoir in the collection, a study of his father's books one Christmas holiday convinced him that he was needed at the company. He talked his father into hiring Andrew Hess, who Henry described as "the most skillful steel moulder in the Upper Mississippi Valley." After serving an intense apprenticeship under Hess, he took control of his father's plant. This memoir also states that he performed the town's (presumably Lone Tree's) civil engineering for seven years and during that time is said to have brought telelphone service to the community, to have taken on the completion of the community waterworks when an out-of-town contractor failed to complete it, and to have  redesigned the town's wells. In addition he designed all the equipment for the steel works, except the electrical motors.

In 1915, Henry designed the Zimmerman Steel Company east of Bettendorf, Iowa and became Vice-President in charge of buying and shipping. He also began taking classes in business and engineering. In 1929 The Santa Fe Railway acquired many steel companies and they hired Henry as foundry engineer in which capacity he travelled from the Mississippi to the eastern seaboard inspecting the plants, taking care of problems and working to make them more efficient and productive.

In the early nineteen thirties Freyn Engineering Company selected Henry as their chief foundry engineer, one of fifty- seven specialists chosen to establish modern steel mills in Russia. He arrived at Kuznetz, Sibera on January 7, 1931. The temperature was 81 degrees below zero. The hotel where he was staying had no heat because the steam heaters installed by German workers had frozen and burst their pipes. The temperature inside the hotel was sixty-six degrees  below zero. On the job, they poured concrete at thiry-five below and kept it warm with hot stones and boiling water. The plant at Kuznetz went into production sixty days ahead of schedule, well before the 286 other plants scheduled to open at the same time. The Russians were so impressed that they made a film of him at work.

While there, he revised some engineering American textbooks which had been translated into Russian.

One of his projects was to remodel a metallurgical works in a building built in 1794. Eventually, Russia ran out of money and the projects were terminated. When Kruschev visited Iowa in the nineteen-sixties, Henry met him and met with his technical advisers, who told him that the plant he had built in the thirties was still working fine.

After returning from Russia, he did consulting work, repairing existing plants and building new ones. During World War II he served as chief inspector for the Bureau of Ships as a civilian through General Motors' Electromotive Division. In his memoir in the collection, Henry rather cryptically states that the family "lost control of the Plant on War contracts."

In his later years, he worked on a design for a rotary engine and lived in Davenport with his daughter and son-in-law,  C.H. Wildman, the sheriff of Scott County. At one point, he ran for the House of Representatives in the First Iowa Congressional District on the Democratic ticket.  Henry L. Zimmerman died in April 1971.

JRoethler, October 2006

Scope and Contents

This collection consists of records of the Zimmerman Steel Company and is comprised mostly of photographs. This includes pictures of the Monarch Grubber Manufacturing plant; the Zimmerman Steel Company; the site, buildings, and people involved in the building of the steel plant in Siberia; and photographs of W.C. Zimmerman and his family.  Engineering drawings, an appointment diary, information booklets for the Monarch grubber (in Spanish), correspondence, campagin cards, and clippings round out the collection. The scrapbooks of Henry's travels and work in Russia in the 1930s provide a glimpse into place and time for which U.S. documentation is extremely rare.

Photographs: Throughout

Acquisition and Processing Information

These papers were given to the University of Iowa Libraries by Doreen Gauthier in 2006.

Guide posted to the Internet: September 2006.


1:  Henry L. Zimmerman correspondence and clippings. An engineer, Henry L. Zimmerman built a steel plant in Siberia in the 1930s, later ran for the House of Representatives, First Iowa Congressional District. 1957 Diary. (Ca. 44 items)


2: Henry L. Zimmerman engineering drawings. (8 items)


3. Henry L. Zimmerman design and construction of a steel mill in Siberia. Two photograph albums. Three manuals in Russian documenting mill operations, including a manual on the composition of cast iron according to the system of McLane (or McLain). It is addressed to workers, technicians and engineers and published in Novosibirsk in 1931. In the preface it is said that issue of this book was stipulated by the shortage of the literature on foundry business in the USSR. The book explains special features of the foundry business.  It is said that 13 books by McLane who was an amateur at first and then turned into a specialist in the foundry business were very useful. They were accorded to us by the apprentice of McLane, H.L. Zimmerman, the consulting specialist of Freyn Engineering Company for translation from English. In the back cover there is the list of other books on this issue and their price. The information  on the foundry business and cast iron is very specific.  (Description provided by Irina Rezhapova.) (Ca. 90 pages of materials).


4: Monarch Grubber Mfg. Co. building (photograph); four photographs of stump puller. (7 items)


5: Zimmerman Steel Co., Lone Tree, Iowa. 9 photographs. Check. Two company product  catalogs (in Spanish). 5 items


6: Zimmerman house in Lone Tree; clipping (2 items)


7: William C.F. Zimmerman family photographs (7 items)


8: William C.F. Zimmerman  (1 photograph)

9. Photocopy of pages 1 -- 6 of the 1914 catalog, containing historical information about the company. Original at the Iowa City location of the State Historical Society of Iowa. (7 pages)

10. Obituaries for W.C.F. Zimmerman, Henry Zimmerman, Isabelle (Mrs. Henry L.) Zimmerman. (5 pages)

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