Note: Updated Feb. 28, 2020.
My RCV bibliography lists books and articles that are research-heavy, but I wanted to keep track of other important texts as well. Some are from the movement itself, and others debate its proposals.
This is a non-exhaustive and evolving list. Entries are organized by period: recent books, slightly older (1990s-early 2000s), old (1890s-1940s), and very old (1860s-80s). Readers interested in very deep PR history can visit this page at the PR Foundation website.
It is an interesting list to compile. The farther back one goes in time, the harder it is to distinguish social science from advocacy.