Read these general articles to build your knowledge of the topic. Then, you will be ready to develop a research question and continue your targeted searching.
Terms for Searching:
"Interstate Highway Act"
"Federal-Aid Highway Act"
"National Interstate and Defense Highways Act"
Highway Hearing. Dow Chemical Company. American History in Video. Web. 8 Dec. 2014. <http://search.alexanderstreet.com/view/work/1791996>.
Delve into scholarly and primary sources; gather pertinent evdience from the texts to answer your research question.