In "DEAR ABIGAIL" by Diane Jacobs, we can name two major contradictions regarding Thomas Jefferson as follows:
1. The book noted that Thomas Jefferson was a slaveholder. However, Thomas Jefferson also claimed that he disapproved of slavery.
2. Another contradiction about Thomas Jefferson that the book revealed was that Thomas Jefferson believed in God and understood that goodness was a virtue. However, he rejected the Church's teachings about Christ and the sin of Adam and Eve.
Thus, these contradictions regarding Thomas Jefferson are explored in "DEAR ABIGAIL" by Diane Jacobs.
Read more about the letters between John Adams and Abigail Adams at https://brainly.com/question/21480865