KnoWhy #174 - When Did Cement Become Common in Ancient America? (Helaman 3:7). Springville, UT: Book of Mormon Central, 2016.

Cheesman, Paul R.. "Question & Answer: "Is there anything that has been found among the archaeological evidences that would sustain or support the Book of Mormon?"." New Era 5, no. 3 (1975): 49-50.

Reynolds, George. "The Mounds and Their Builders." Juvenile Instructor 18, no. 21 (1883): 331.

Sorenson, John L.. "How Could Joseph Smith Write So Accurately about Ancient American Civilization?" In Echoes and Evidences of the Book of Mormon, edited by Donald W. Parry, Daniel C. Peterson and John W. Welch, 261-306. Provo, UT: Foundation for Ancient Research and Mormon Studies, 2002.