Later in life, Espy divided his time between Manhattan and his home in Oysterville, and wrote nationally bestselling books on local history, including Oysterville: Roads to Grandpa's Village (1977) and Skulduggery on Shoalwater Bay (1998).
Später in seinem Leben teilte Espy seine Zeit zwischen Manhattan und Oysterville, wo er Bestseller Bücher über Heimatgeschichte (darunter Oysterville: Roads to Grandpa’s Village in 1977 und Skulduggery on Shoalwater Bay in 1998) schrieb.