Here are 5 interesting facts about September 1 in Iowa history:

1. Iowa was admitted as the 29th state in the United States on September 1, 1846. Prior to that, it was part of the Iowa Territory, which was established in 1838. The first state capital was Iowa City, but it was later moved to Des Moines in 1857.

2. On September 1, 1922, the town of Ashton, Iowa set the record for the highest temperature ever recorded in the state at 118 degrees Fahrenheit. This record still stands today.

3. September 1, 1933 marked the start of construction on the Saylorville Dam, which was built on the Des Moines River to prevent flooding in the region. It was completed in 1977 and stands at 105 feet tall.

4. In 1943, Iowa State University in Ames became the site of the U.S. Navy's V-12 officer training program, which educated future naval officers during World War II. The program was established to supplement the rapidly-depleting ranks of the Navy after many men were called into active duty.

5. On September 1, 1997, the Iowa State Fair set a new attendance record with 1,109,150 visitors. This broke the previous record of 1,089,369 visitors set in 1995 and has yet to be beaten. The Iowa State Fair is one of the largest state fairs in the United States and has been held annually since 1854.