A New York City museum’s collection of some 85,000 artifacts exploring 160 years of Chinese American history may have been destroyed by a fire. On Thursday night, a blaze tore through the building at 70 Mulberry Street in Chinatown that stored the Museum of Chinese in America (MOCA) archives, including every collection item not currently on display at the museum’s public-facing Centre Street location. The artifacts, which include documents relating to the 1882 Chinese Exclusion Act, wedding dresses from the early 1900s, and handwritten letters, are likely to have suffered irreparable water damage and will be inaccessible for at least three weeks due to structural concerns about the building.