Methuen sheets with Boston and Maine RR Trackage 
Roughly in order, North to South
 
1885 Maps 
 5
 1
 3
 
1892 Maps 
 6
 4
 2
 8
 
1911 Maps 
 18
 4
 7
 10-11
 13
 
1919 Maps 
 18
 4
 7
 8 (actually sheet 7 again, apparently sheet 8 not scanned)
 10-11
 13
 
1927 and 1949 Maps 
 18
 3
 7
 11
 14