For the Arizona State Government ERIO - 5 Paragraph Informative Essay, you will be required to conduct research on the Arizona State Government and the Arizona Constitution. For this essay, you will need to gather information from both primary and secondary sources. Primary sources are personal items and writings connected with individuals during a specific period. Examples of primary sources include personal records, letters, paintings, and artifacts. More often, we turn to secondary sources when we have research projects. Encyclopedias, textbooks, newspaper articles, and magazine articles are considered secondary sources.