Postcard: Peary's Arctic Ship Roosevelt
Hugh C. Leighton Co. (aka Leighton & Valentine), (1906 - 1909)
paper
Germany Postcard

Postcard: Eagle Island, Me., The Summer Home of Robert E. Peary
Hugh C. Leighton Co. (aka Leighton & Valentine), (1906 - 1909)
paper
Germany Postcard

Postcard: South Freeport, Me., Pound of Tea
Hugh C. Leighton Co. (aka Leighton & Valentine), (1906 - 1909)
paper
Germany Postcard

Postcard: A Polar Star
Hugh C. Leighton Co. (aka Leighton & Valentine), (1906 - 1909)
paper
United States Postcard

The Arctic Fast Mail
Hugh C. Leighton Co. (aka Leighton & Valentine), (1906 - 1909)
paper
United States Postcard