The Crested Butte Mountain Heritage Museum is located in the historic building affectionately called Tony's Conoco. Here's a timeline of the building's journey.
- 1883: John McCosker builds a blacksmith on the corner lot of 4th and Elk.
- By 1904: An addition to the building is added for the hardware store.
1911: Crested Butte's first retail gas pumps are installed in front of the building.
- 1922: John McCosker retires and sells the business to John Campbell and former Gunnison County Commissioner Bill Whalen.
- 1939: Bill Whalen's son-in-law, Tony Mihelich, starts working in the hardware store.
- 1940: Tony becomes a partner in the business.
- 1952: Tony becomes sole owner of the business. Martha Sporchich, Tony's step-daughter, helps him run the business.
- 1990: Tony is recognized for being the longest sole owner of a Conoco in the world. The company gives Tony a plaque and gold watch as a thank you for 50 years of service.
- 1996: Tony passes away on Christmas Day, resulting in the business to close.
- 2001: Crested Butte Mountain Heritage Museum raises over 1 million dollars to acquire the building and complete the first renovations.
- 2003: Crested Butte Mountain Heritage Museum opens to the public.
- 2015/2016: A historic structure assessment of the building is performed thanks to a grant from the History Colorado-State Historical Fund.
- 2017: Phase I of a two-phase building rehabilitation begins.
- 2018: Phase I completes and Phase II of the two-phase building rehabilitation begins.
- 2019: Phase II will be completed for Tony's Conoco to continue in serving the community!