Walking on a Moonbeam is Bill McDonald's first book. It is a collection of poems written during his career as an engineer/scientist working in the US space and national defense programs. The poems were written based on personal life experiences and are organized into nine topics: youth, adventure, love, seasons, change, hope, places and things, farewells, and prayer. Consequently, it also tells much of his own personal story, beginning with his youth, continuing with his adventures in the United States moon program, and covering many of the events, activities, and circumstances of his life.