Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,137 pages of information and 233,680 images on early companies, their products and the people who designed and built them.
Co-operation started in 1924 between Benz & Cie (founded 1883 by Karl Benz) and Daimler Motoren Gesellschaft (founded 1890 by Gottlieb Daimler and Wilhelm Maybach). In 1926 they formally merged to become Daimler-Benz Aktiengesellschaft. They would use the name "Mercedes-Benz" on their vehicles.
See Wikipedia entry.