Author Bill Yenne will be signing copies of his book, “Hap Arnold: The General Who Invented the US Air force,” at 6 p.m. Thursday, Feb. 6, at the Swiss Hotel, 18 W. Spain St.

Yenne will be joined by Robert Arnold, Hap Arnold’s grandson and the owner of Chandelle Winery.

Hap Arnold was the father of the modern Air Force who retired to Sonoma and for whom Arnold Drive is named.