This assessment measures students' ability to contextualize and periodize two historical documents by placing them on a timeline. The first document is a 1942 newspaper ad from United China Relief, an organization founded to provide humanitarian aid to China, and the second is an excerpt of remarks made in 1955 by political science professor George A. Peek Jr. in a forum about U.S. foreign policy. This HAT draws on students’ historical knowledge, but in a way that requires more than the simple recall of information. Students must understand how and why the relationship between the United States and China changed from World War II to the early Cold War and use their understanding to place historical sources in time.