A bookie.
Droll. You could call that person a bookseller or shopkeeper.
An author is a person who writes and sells books.
The person who sells drink is known as sellsmen
baker
You call a person who sells flowers a (Florist)
A person who sells ship supplies is called a chandler
fishmonger
A chandler.
A haberdasher.
A glomber
jeweler
A "Shipbroker".
A butcher.