manufacturing complex on Piquette Avenue. Studebaker began to put its name on the cars formerly produced by the E-M-F Company in 1912. In 1913, the plant was one of the sites affected by the 1913 Studebaker strike, the automotive industry's first major labor strike. In 1920, Studebaker built a four-story, reinforced concrete building, known as the Studebaker Detroit Service Building, immediately west of the Piquette Avenue Plant. In 1926, the elevator-stairwell combination on the Piquette Avenue Plant's southwest side was moved slightly northwards. This enabled the Detroit Service Building to be connected to the Piquette Avenue Plant's southwest corner on the second and third floors, which created a ground-level, drive-through access point to the court between the two buildings. Also in 1926, the machinery for both of the Piquette Avenue Plant's elevators was replaced. Studebaker used the Piquette Avenue Plant for car production until 1933. In 1936, Studebaker sold the Piquette Avenue Plant to the Minnesota Mining and Manufacturing Company (3M), a producer of rubber auto parts and non-adhesive paper tape. Around 1937, the powerhouse and several other small buildings previously built by Ford Motor Company west of the factory were demolished. The Cadillac Overall Company, a work clothes supplier, purchased the building in 1968. The Heritage Investment Company bought the building in 1989 and owned it until 2000. Since the early 1990s, a company named General Linen & Uniform Service has occupied part of the Piquette Avenue Plant's first floor. The Detroit Service Building next door is now used by Henry Ford Health System to store medical records. The openings that previously allowed direct access between the two buildings on the second and third floors are now sealed. The Piquette Avenue Plant still stands in spite of the decline of Detroit, which began in the mid-20th century. Model T Automotive Heritage Complex The Ford Piquette Avenue Plant was sold to the Model T Automotive Heritage Complex in April 2000. Model T Automotive Heritage Complex is a 501(c)(3) nonprofit organization that has run the building as a museum since July 27, 2001. The Piquette Avenue Plant is the oldest purpose-built automotive factory building open to the public. The museum, located north of Midtown Detroit at 461 Piquette Street, attracted 31,018 visitors in 2018. It contains over 40 early automobiles built by Ford Motor Company and other Detroit-area car makers, as well as recreations of Henry Ford's office and the room