Impressed by the buildings being erected for the World's Columbian Exposition of 1893 near his south side home, the young Marshall decided on a career in architecture.
In 1905, he established his own practice hiring MIT-trained architect and engineer, Charles Eli Fox..[1] One of his earliest commissions was destroyed a month after its completion in an event remembered as one of Chicago's worst disasters, the Iroquois Theater Fire of 1903.
[3] Marshall was handsome and wealthy and entrepreneurial, and he has been described as a cross between the fictional playboy Jay Gatsby and real-life showman Florenz Ziegfeld.
Although not an original stylist, nor great structural innovator, he was a creative re-worker of style in popular building projects.
Beginning in 1906, Marshall and Fox designed a series of buildings for the South Shore Country Club, the last of which was a large Mediterranean revival style clubhouse erected in 1916.
The firm also designed Kaskaskia Hotel in LaSalle County, Illinois, and the Cobe Estate in Northport, Maine.