Does anyone know what years are available for East Boston city directories? I'm trying to find someone between the 1910 and 1920 cenus. Ken Milano

In researching my family history, I have found that a number of my Sicilian ancestors, as well as many others not related to me, used the address of "3 North Square" in Boston's North End, as their address of final destination (Ellis Island Database). I found scant information on internet about this address. There was a bank located there for a couple of years, then a funeral parlor, and today it is a famous Italian restaurant (Mama Mia's I believe). My ancestors came over between 1910 and 1920. Would any one know what was located there? A tenement house? An immigration station? An employment office? What? Ken Milano