Possible Clues:

• You might get a paper from a railway porter, perhaps
• Does one keep a railway bookstall?
• One pushing paper to insert a cryptic?
• Shopkeeper bursts into tears
• I may get in new order for artist?
• Paper seller
• Shopkeeper, e.g. Victoria and her descendant Elizabeth
• Supplier of office materials
• Queen Victoria maybe is first in shop
• Stop here essentially for this merchant