True. True. Inaccurate.
This firm published 7,500 lithographs over 72 years. It was indeed run like a factory, with lithographs being printed then hand-colored by immigrants who worked there, mostly women who had a background in art.
Smaller prints would sell for between 5 and 20 cents, while larger prints were more expensive, costing between $1 and $3. Today, they usually sell in the hundreds of dollars.