Sarah Palin's father and brother will sign copies of their book Our Sarah: Made in Alaska at 6:30 p.m. today in Richland.
Chuck Heath Sr. and Chuck Heath Jr. will appear at Hastings, 1425 George Washington Way, Richland.
The book, which they co-authored, shares stories from the former Alaska governor's life and what growing up in Alaska meant to her and her family.
Palin became a star of the conservative political scene when she was chosen by Republican presidential candidate John McCain to be his vice presidential running mate in 2008.
She since has become a best-selling author who attracted thousands of Tri-Citians to a signing of her book Going Rogue: An American Life in November 2009.
Palin's grandparents, Clem and Helen Sheeran, came to Richland in 1943 so he could work at the Hanford nuclear reservation. They had six children, including Palin's mother, Sally Heath, who graduated from Columbia High School, which now is Richland High.