WASA Studio is one of the oldest American architectural and engineering firms. Founded in 1891 as Reed and Stem in St. Paul, Minnesota as a partnership between Charles A. Reed (1858–1911) and Allen H. Stem (1856–1931), the successful partnership captured a wide range of commissions. The firm was reformed as Wank Adams Slavin Associates in 1961, and adopted the name WASA Studio in 2004.
One early work was Medical Hall on the campus of the University of Minnesota. They were, however, most widely known for their work on railways over the course of two decades. Through Reed's relationship, by marriage, to the president of the New York Central Railroad, they gained a high-profile commission for New York's Grand Central Terminal with the architecture firm of Warren and Wetmore, and the newly hired Alfred T. Fellheimer as lead architect. In addition, Reed and Stem undertook many significant projects for the Great Northern Railway and the Northern Pacific Railway. After Reed's death, Stem continued to practice with Fellheimer until his retirement in 1920.
The firm moved from Minnesota to New York after being selected to design the Grand Central Terminal.
The Reed and Stem papers held by the Northwest Architectural Archives, in the Elmer L. Andersen Library, at the University of Minnesota constitute only a small portion of their output. Eight unique commissions are listed, and represent a sample of the firm's experience in non-railroad related commission work, namely residences and commercial buildings.
The firm was reformed as Wank Adams Slavin Associates in 1961, and adopted the name WASA Studio in 2004. The firm's office is located on Broadway. In 2015, the firm—which had millions of dollars in debt and was facing several lawsuits from previous former clients—filed for bankruptcy and was granted chapter 11 protection from creditors.