You are very close to the little library. If you are standing and looking up at the State House to the left is a stature of JFK go arounf it and down the stairs there is a library there and she may help you. She has all the maps and city directories, which will show you all of Boston.
Boston City Hospital will more then likely be there with info. Bt your both certificate will be right close to South Station. The records are kept there, You would be in front of the building from the big new hotel heading towards South Station