Thunder Bay Island Light, .tif [C, D]

Spectacle Reef Light, 0018

Middle Island Lighthouse Complex,

Detour Reef Light, 7592

Tawas Point Light,

Middle Island Keepers Quarters,

Middle Island Fog Signal Building,

Gravely Shoal Light, 19

Alpena Light, .tif [CR, CB]

Thunder Bay Island Fog Signal building, T-490883-R5-4

Sturgeon Point Lighthouse, T-490833-R2-5

Middle Island Lighthouse Keepers Building, T-490883-R6-1

Middle Island Light Tower, 2008-10-21 14-46-56 IMG 0036

DeTour Reef Lighthouse,