A speaker who wants to include the words of Winston Churchill in a speech should search in which of the following?

The correct choice for a speaker looking to include the words of Winston Churchill would be Bartlett's Familiar Quotations. This resource is specifically designed to provide a collection of well-known quotes from famous individuals across various fields, making it an ideal tool for finding succinct and impactful statements made by influential figures like Churchill. It serves as a valuable reference for anyone wishing to incorporate recognized quotations into their speeches to reinforce their message or to lend credibility to their arguments. Other resources, while potentially useful for different aspects of research, do not specialize in offering curated collections of memorable quotes.