Hobby shops;
Moose miniatures
Topsfield, Ma. ( 32 mi east)
Shepaug Railroad Co.
Leominster, Ma. (15 mi. S.W. )
Big G Trains
Ayer, Ma. ( 8 mi S.)
Henry's Hobby House
West Boylston, Ma. ( 20 mi. S.W.)
These are the only ones I could find within reasonable distance from you. You can Check the back of M.R. to see if they are listed,and get phone numbers, and street addresses.
Good Luck,
Pete