Close-up view of the bucking board and crusher used to prepare coal and ore samples for analysis at the Dearborn Drug and Chemical Works (later Dearborn Chemical Company) 35th Street laboratory facilities located in…

View of a section of the office space at the Dearborn Drug and Chemical Works (later Dearborn Chemical Company) 35th Street laboratory facilities located in Chicago, Illinois. Founded in 1887, the Dearborn Chemical…

Album containing 25 photographs depicting early facilities associated with Dearborn Drug and Chemical Works (later Dearborn Chemical Company) in Atlantic City, New Jersey and Chicago, Illinois. Founded in 1887, the…

General view of Eva Vaughn (left) and an unidentified employee at work in an office space at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. Founded in 1887, the Dearborn…

General view of male and female employees at work in an office space at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. While the two female employees closest to the camera…

General view of male and female employees at work in an office space at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. While the majority of the employees are unidentified,…

General view of employees at work in an office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. The employees seated at the desks are identified as John W. Brashears (left) and…

General view of employees at work in the library at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. The male employees are identified as C.C. Dennis (left) and A.H. Reynolds…

General view of unidentified female employees at work in the stenographic office space at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. Founded in 1887, the Dearborn…

General view of the laboratory office space at the Dearborn Chemical Company 35th Street laboratory facilities located in Chicago, Illinois. The employees seated at the desks are identified as A.H. Reynolds (left) and…

General view of male and female employees at work at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate ancestor of…

General view of male and female employees at work at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate ancestor of…

General view of female employees at work at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate ancestor of…

General view of female employees at work at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate ancestor of…

Close-up view of employee J.D. Purcell seated in his office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate…

General view of employee Dudley Kimball French at work in the offices at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a…

Close-up view of employee J.W. Harkins seated at his desk at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate…

Close-up view of employee E.M. Converse seated in his office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate…

Close-up view of employee Fred L. Baker seated in his office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate…

Close-up view of employee C.M. Hoffman seated at a desk at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate ancestor…

General view of employee C.M. Hoffman seated in his office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate…

Close-up view of employee Olive Bissell seated at her desk in the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate…

General view of the information desk at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. The employees visible in the photograph are identified as J. Beckerley (seated) and C.M.…

Close-up view of company president Robert F. Carr, Sr. seated in his office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was…

Close-up view of employee George R. Carr seated in his office at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Founded in 1887, the Dearborn Chemical Company was a corporate…