Iowa became the 29th state in 1846. The Iowa quarter features a schoolhouse, a teacher with students planting a tree, and the captions "Foundation in Education" and "Grant Wood" (native Iowan whose paintings depict the rural American Midwest). Public domain image on Wikipedia.
Our Liberties We Prize and Our Rights We Will Maintain
The state motto of Iowa was the work of a three-man Senate committee and was incorporated into the design of the Iowa state seal at their suggestion. The motto (Our liberties we prize and our rights we will maintain) also appears on the Iowa state flag.