Hoboken grew. People got many jobs in the late 19th and early 20th centuries. The Hoboken Land and Improvement Company, started by Colonel Stevens in 1838, created many streets, began housing, and created building sites. The housing was made up of masonry of three to five stories. Many buildings survive to the present day, and the street grid. It was also at this time that German immigrants became the main group in Hoboken. Along with the main industry of creating ships, well-known industries that created a big presence in Hoboken were Maxwell House, Lipton Tea, and Hostess, among others. In 1870, the Stevens Institute of Technology was created at Castle Point, the highest point in Hoboken.