| BUSINESS |
| ACTIVITY |
| BUILDING |
| DATES |
| M. A. Chamberland |
| General Trader |
| Stanstead Plain |
| avril 1894 - ? |
| M.D. & J. Haseltine |
| Fabrique de chapeaux |
| ca1823 |
| M. P. Dixon & Co. |
| General Trader |
| Beebe Plain |
| juin 1905 - ? |
| M. Scott |
| General Merchant |
| Stanstead Junction |
| Juin 1890 - |
| McClintock & Fregeau |
| General traders |
| Beebe Plain |
| Mars 1873 - mars 1875 |
| McClintock & Maloney |
| Merchants |
| Beebe Plain |
| février 1883 - juillet 1883 |
| Merrill & Dixon |
| General Merchants and Traders |
| Beebe Plain |
| octobre 1904 - juin 1905 |
| Merrill & Jenkins |
| Lumber |
| Miller & House |
| Nurseryman |
| Beebe Plain |
| Mai 1885 - |
| Miss Ruggles & White |
| (1858) |
| Miss S.A. & Miss K. Clarke |
| Dress making and millinery business |
| (1858) |
| Misses I. & M. Young |
| Millinery establishment |
| (1855) |
| Moir & Frost |
| Granite and Marble Manufacturers and Dealers |
| Beebe Plain |
| décembre 1899 - janvier 1904 |
| Moreau & Haril |
| Boot and shoe mfg. |
| (1890) |
| Morrill & Brodie |
| Tanners, Manufacturers and Dealers in Boots, Shoes, Leather and Findings |
| ca1866 |
| Morrill & Co. |
| Manufacturer of the "Reece" patent circular shuttle sewing machine. |
| (1875-1876) |
| Morrill & Coffran |
| Machinists |
| (1871) |
| Morrill & Fuller |
| Butchers |
| Rock Island |
| février 1904 - ? |
| Morrill & Judd |
| Manufacturers and Wholesale Dealers in Boots and Shoes |
| ca1873-juin 1879 |
| Morrill & Reece |
| (1872-1874) |
| Mrs Haseltine & Miss Ruggles |
| (1857) |
| Miss White & Mrs Horton |
