
The Valentine-Souvenir Co. was formed out of the merger of the Leighton & Valentine Company and the Souvenir Post Card Company and published tinted halftone view-cards in line block in the United States.


Source: Metro Postcard
The Valentine-Souvenir Co. was formed out of the merger of the Leighton & Valentine Company and the Souvenir Post Card Company and published tinted halftone view-cards in line block in the United States.
Source: Metro Postcard