This photograph—the first known image of the Chicago Orchestra—was taken 125 years ago today on March 14, 1892, on the steps of the Saint Louis Exposition and Music Hall during one of several first-season domestic tours.

To learn more about this remarkable image, click here for an article written for the fall 1991 CSO program book by then–second horn Norman Schweikert. Schweikert, who retired from the Orchestra in 1997, continues his research, gathering biographical information on professional symphony orchestra and opera musicians from all over the world.

Read more: The earliest known photograph of the Chicago Orchestra