Jackson is using newspaper articles dating from the early 1950s to study unofficial attitudes toward working women post-World War II. Jackson is using what research method?

Jackson is using historical methods.

Explanation:

Historical methods is a way of basing the research on history events. In this case Jackson chose the year 1950 to study the unofficial attitudes toward working women post World War. He has identified a specfic period of time in history in which he would based his research.