The histories of DeVry and QRS, though largely separate, are linked by a noteworthy, albeit brief, corporate union in the early 20th century. Both companies originated in Chicago with a focus on cutting-edge technology of their time.

 Herman DeVry, an inventor and innovator in visual education, founded the DeVry Corporation in 1913. He made a name for himself by creating the "Theater in a Suitcase," the first portable motion picture projector, which revolutionized the use of film in schools and other institutions. His work was dedicated to making learning more visual and accessible through technology.

 Around the same time, the QRS Music Company, founded in 1900 by Melville Clark, was a dominant force in the music technology of the era: the player piano. QRS became the world's largest manufacturer of piano rolls, capturing the live performances of famous artists and making music widely available for in-home entertainment long before the advent of widespread audio recording.

 The paths of these two innovative companies converged in 1929 when QRS, looking to diversify its technology portfolio, purchased the DeVry Corporation. For a short period, the company operated under the name QRS-DeVry, producing devices like movie cameras and projectors. However, this merger was short-lived.

 By the early 1930s, the two entities went their separate ways. Herman DeVry, in collaboration with Dr. Lee de Forest, shifted his focus entirely to technical education, establishing DeForest Training School in 1931. This institution would evolve over the decades, becoming DeVry Technical Institute and eventually the well-known DeVry University, a prominent for-profit institution focused on career-oriented education.

 Meanwhile, QRS returned to its musical roots. After a series of ownership changes, it continued to produce piano rolls for decades and adapted to new technologies, eventually developing modern digital player piano systems. While their corporate marriage was brief, both DeVry and QRS left lasting, independent legacies in the fields of education and automated music technology.