President Franklin D. Roosevelt and Undersecretary of State Sumner Welles began trying to make military matériel available to Latin America during the latter 1930s. Little progress was made until passage of the Lend-Lease Act in 1941 enabled Washington to furnish eighteen Latin American nations with about $493,000,000 worth of military assistance during World War II. This study, based primarily on State Department lend-lease decimal files in the National Archives and documents published in Foreign Relations volumes, views the policy's background, development, and implementation in each recipient nation. The conclusion is that the policy produced mixed results for the United States and Latin America.

The decade of the 1850s saw the Texas press separate into two opposing groups on the issue of filibustering. The basis for this division was the personal beliefs of the editors regarding the role filibustering should have in society. Although a lust for wealth drove most filibusters, the press justified territorial expansion along altruistic lines. By 1858, however, a few newspapers discarded this argument and condemned filibusters as lawless bands of ruffians plundering peaceful neighbors. Throughout the decade, the papers gradually drifted from a consensus in 1850 to discord by the date of William Walker's third attempt on Nicaragua in 1858.