The Manitoba Transit Heritage Association Inc. was established on July 21, 1989, by dedicated Winnipeg Transit employees and retirees. The organization's mission is to restore old transit vehicles for historic purposes, create a transit museum for display, and provide restored heritage transit vehicles for public parades, displays and tours. They aim to preserve, record, and share transit history through their work. The MTHA is a membership-based museum and registered tax charitable organization.

The Manitoba Transit Heritage Association primarily operates in Winnipeg, Manitoba, Canada. Their activities extend throughout Manitoba as they maintain and display the largest collection of authentic vintage transit vehicles in the province. The organization acknowledges that they travel on Treaties 1, 2, 3, 4, and 5 territory in Manitoba, which are the traditional territories of First Nations peoples and homeland of the Red River Metis people.

Program highlights include restoring and operating vintage transit vehicles for public education and enjoyment. During summer months, MTHA volunteers proudly display their unique collection at community festivals, special events, car shows, schools, and senior centers. They provide historically accurate vehicles for appearances in movies and television productions. The MTHA also operates a Transit Museum Bus that brings the story of public transportation to schools and community events. Additionally, they collect transit-related memorabilia such as tickets, passes, signage, driver uniforms, and historical photographs.