Click on the small images to change the selection of the larger image.

State's Attorney Julius Grinnell directed the Haymarket investigation and trial right from the start. He met with Mayor Harrison the day after the bombing, and he gave Schaack and Bonfield free reign to round up anarchists. Grinnell was an honest and competent, if ambitious, prosecutor who, like many other Chicagoans, gave finding and convicting the perpetrators of this horrid deed a higher priority than observing the niceties of procedure.

Grinnell was born in 1842 in northern New York. He was educated at Middlebury College, and he both practiced law and taught school in his home state before moving to Chicago in 1870. He was elected city attorney as a Democrat in 1879. He was reelected twice before he successfully ran for the position of Cook County State's Attorney in 1884. Among the many cases he tried was the murder charge against Frank Mulkowski, in which Schaack served as the primary investigator. On the strength of his popularity for prosecuting the anarchists, Grinnell was elected judge of the Superior Court in 1887, but he resigned in 1891 to go into private practice. He died in 1898.

Grinnell was aided by three other attorneys, whose photographs can be viewed by clicking on the smaller images. All of these photographs come from a special supplement published by the Chicago Inter-Ocean to commemorate "the great anarchist trial." Underneath the small image of Grinnell are George C. Ingham, Francis W. Walker, and Edmund Furthmann.

Walker was one of the very few participants in the case actually born in Chicago. Furthmann, who testified briefly but otherwise did not speak at the trial, is a more shadowy figure. His ability to speak German no doubt helped in the investigation, and he also appears to have worked side-by-side with the police during several of the rough interrogations administered to suspects and witnesses.