The Buchanan and Bolt Company started in Holyoke in 1878 as started by Robert Buchanan and John Bolt.
Sanborn map analysis:
Sanborn 1884 map – hard
Sanborn 1895 map they are hard to find but on the 1894 Richards map they are on Winter Street.
Sanborn 1915 map at the corner of Appleton and Winter Streets
Sanborn 1949 map they are at the same location and now called the Sinclair Co