The Wilburt Scott Brown Papers (P.C. 163) are a useful source of information for many concerns of the Marine Corps in the 2nd quarter of the 20th century. The bulk of this material is in his correspondence, memoranda, and speeches. Iconographic materials in the collection fully illustrate many of his important posts and activities. Brown served in Nicaragua from 1927 to 1929. His supply problems, private spy system, routine concerns, and contributions to an early Marine Corps study of guerrilla warfare, are all available for study as those of a competent Marine Lieutenant in that time and place. In 1964, Brown went through this material and added several notes and comments elucidating it.