I checked those sources myself:

1870:

Ramsay William A., boards 8 Lindall

Ramsay William A., agent National Publishing Co. 89 Court, boards 2 Cambridge

1872:
Ramsay William A., lunch-room and billiards, 8 Lindall, house do.

1875:
Ramsay William A., house 109 Warwick

Ramsey William, machinist, h. 80 Medford, Ch's'n