White Rose
You may also be looking for the unrelated White Rose Redi-Tea.
White Rose was the trademark name used on Earth by a Canadian oil company during the early 20th century, specializing in the sale of gasoline.

A sign bearing the White Rose Gasoline name and "The Boy and the Slate" logo was for sale in a San Francisco antique store in 1986. ()

External links
 The National Refining Company - story about "The Boy and Slate" 
  - White Rose asset holder
Earth establishments