Teich moved to Chicago, Illinois and started his own firm, Curt Teich & Company, in January 1898.
|Vintage postcard of the Curt Teich & Company Works. Few people who pass the building today realize that it once housed the largest postcard publishing company in the country.|
Teich is best known for its "Greetings From" postcards with their big letters, vivid colors which had originated in Germany in the 1890s. Teich successfully imported this style for the American market.
Teich employed hundreds of traveling salesmen, who sold picture postcards to domestic residences, and encouraged business to create advertising postcards; these salesmen also photographed the businesses and worked with the owners to create an idealized image.
The company closed in 1978. In 1982, the bulk of the collection—more than 500,000 unique postcard images relating to 10,000+ towns and cities across the United States, Canada, and 85 other countries was donated by the Teich family to the Lake County Discovery Museum in Wauconda, Illinois. In 2016 it was announced that the archives would be transferred to the Newberry Library in Chicago.
 A printer's devil was an apprentice in a printing establishment who performed a number of tasks, such as mixing tubs of ink and fetching type.