Charles Knight published many non-fiction works in parts or fascicules to make them affordable to the widest market. This advertisement was part of a series of ads for Knight's "Periodical Works" included in the first volume of The National Cyclopaedia that Knight published in 1847. The text of the ad indicates that the original edition of The Pictorial Bible (1836-38) was still selling well, but that Knight and Kitto had updated it with the more recently published The Standard Edition of the Pictorial Bible that was also being sold in parts.