Parnassus on Wheels
Author: first_name: Christopher
last_name: Morley
Language: English
Year: 1917

Parnassus on Wheels is about a fictional traveling book-selling business. The original owner of the business, Roger Mifflin, sells it to 39-year-old Helen McGill, who is tired of taking care of her ailing older brother, Andrew. (summary from Wikipedia)