1. Wyoming gained statehood on February 14, 1890: On this day, Wyoming became the 44th state in the United States of America. It was the first state to grant women the right to vote.

2. The Heart Mountain Relocation Center opened on February 14, 1942: This internment camp was used to house Japanese Americans during World War II. Over 14,000 people were held at the camp between 1942 and 1945.

3. The first successful transplant of a human heart was performed on February 14, 1985: Wyoming-born surgeon William DeVries performed the transplant on patient William Schroeder at Humana Hospital Audubon in Kentucky.

4. Mammoth remains were discovered in Hot Springs State Park on February 14, 1892: While drilling a well in the park, workers discovered the remains of several mammoths, including a nearly complete skeleton. The discovery helped establish the park's reputation as a center for geologic and paleontologic research.

5. Wyoming law prohibited Valentine's Day celebrations in public schools until 2013: A law passed in 1951 prohibited the observance of Valentine's Day in public schools, citing concerns about the holiday's religious and commercial nature. The law was repealed in 2013.