The origin of the source is shown to be valuable because it is able to express Dixon as a reliable source because Dixon Wecter has served as a history professor in the university of Sydney as well as express that he has published multiple works on the Great Depression that covers the general life of people and acts taken during the time to help the U.S. and its economic situation. This allows historians studying acts in the Great Depression to know that Dixon Wecter has an exceptional understanding on the topic as well as shows his credibility on the subject. Additionally, the date the book was published also serves to enhance its value because it shows that the book when being written was only twelve years away from the time when the Agricultural Adjustment act was around, this is valuable because it shows historians studying acts in the great depression that Dixon Wecter was able to see the acts success or failure first hand. However, the origin is limited because the book was published in 1949, a time too early to acquire other works or books to help Dixon write the book referencing other works, causing his book to have a low amount of references that impair the credibility of his