Nena Howell Walton is the artist-in-residence at Sitka National Historical Park. (Photo courtesy of Nena Howell Walton) Sealaska Heritage Institute is hosting Indigenous artists in public spaces across Southeast Alaska this year. The residents aim to create, showcase their artistic processes to visitors, and connect with their heritage. Nena Howell Walton is the current artist-in-residence at Sitka National Historical Park. She’s an oil painter…