The Emerald Fire Station was at 62 Chestnut Street. This was Holyoke Fire Station number 7.
From at least 1893 to 1898 they housed the Emerald Hose Company number 7.
From 1899 to 1914 they housed Hose and Steamer number 6 (of two horses) which in 1911 technically changed to number 2.
Sanborn map analysis:
Sanborn 1884 map called a Hose House
Sanborn 1889 map called a Hose House
Sanborn 1895 map called Engine House number 3
Sanborn 1915 map it is gone