Last week, several fire stations in Dorchester held celebrations marking 150 years of service in the neighborhood. When Dorchester was annexed into the city of Boston in 1870, the six fire companies and two ladder companies in the Dorchester Fire Department merged under the umbrella of the Boston Fire Department. Here's a brief look at the history of each Dorchester firehouse, compiled with photos and resources courtesy of the Boston Fire Historical Society. Engine 16/Ladder 6 originally operated out of a firehouse that was built in 1869 at the corner of Temple and River Street in Lower Mills. The building was unique in that assigned fire apparatus operated from two sides of the firehouse and from two floor levels. The main address of 2 Temple St., a side street off River Street, was the quarters of the engine company, while below, on the River Street side, 51 River St. was the address of the ladder company.