This Resource Letter provides a guide to the literature on radio pulsars. Papers at elementary (E), intermediate (I), and advanced (A) levels are cited. Historically important papers, including relevant articles published before the discovery of pulsars in 1967, are listed, as are current areas of pulsar research. This guide also includes a discussion of pulsars’ use in studying a variety of other phenomena ranging from the interstellar medium to relativistic theories of gravitation.