Massachusetts, flag of [3], [87]

Mayflower, sailing of the [87]

Mecklenburg-Strelitz, flag of [101]

Mediæval spelling [6], [22]

Mediterranean and New York Company [75]

Merchant flag, red ensign [40], [47], [58], [73], [80]

Merchant Shipping (Colours) Act [58]

Metal-workers, flag of the [7]

Meteorological signals [135]

Mexico, flag of [23], [123]