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Since 1988, Art and his wife, Marge, have collaborated as a husband-and-wife team to gather material and write seven books on natural and cultural history subjects. Their research has taken them more than 85,000 miles across the US and back from their home near Philadelphia. Their most recent book, Pennsylvania Military Museum, part of the Pennsylvania Trail of History Guide series, was published by Stackpole Books in 2005. Guide to Homes of Famous Pennsylvanians, published by Stackpole Books in the spring of 2003, acquaints the reader with sites within the state associated with 36 of Pennsylvania's best-known sons and daughters. Their previous book, Pennsylvania Battlefields and Military Landmarks, published in 2000 and updated in 2004, guides the traveler 35 battle sites and commemorative memorials within the Keystone state. An earlier book, Trails Across America (1996), describes the nation's 19 national scenic and historic trails. Previously, they wrote a series--Park Ranger Guide to Wildlife (1990), Park Ranger Guide to Rivers and Lakes (1991) and Park Ranger Guide to Seashores (1992). In his previous career, Art served for 14 years as the Public Affairs Officer for the National Park Service in its Mid-Atlantic Region that managed 20 national park areas. From 1958 to 1974 he was an editor and staff writer for the National Geographic Society, editing its weekly School Bulletin and traveling on foreign and domestic assignments to gather material and write chapters for several Geographic books, including Canada, Vanishing Peoples of the Earth, Vacationlands, and The Alps. Previously he had been a staff member of the International Press Service of the US Information Agency and the news editor of All Hands Magazine, the Navy's newsmagazine. He began his journalism career as a reporter with the McKeesport (PA) Daily News. In addition, he has contributed numerous free lance articles to general circulation magazines, written 70 articles for the Young Students Encyclopedia and written several travel articles for the Sunday Philadelphia Inquirer, articles that were later published as part of the book Weekend Journeys (1995). Other travel articles have been published in Main Line Life, a community newspaper. Art served two terms on the board of directors of the National Press Club in Washington DC, and as a member of the Society of Professional Journalists, National Association of Government Communicators, Philadelphia Public Relations Association and Delaware County Press Club. He served as a disaster official with the Federal Emergency Management Agency and is a longtime member of the Barbershop Harmony Society in Bryn Mawr, Pennsylvania. The Millers have participated in Elderhostel programs in Hawaii, Cincinnati, China, Bermuda, Spain, Australia, Peru, Ecuador, Greece, Switzerland, Italy, Canada, Costa Rica, Panama, Netherlands and Belgium. They lecture on the national trails and outdoor adventures at Elderhostel programs and adult education classes and at local libraries, retirement homes and community meetings. The Millers have four grown daughters who are married and live with their families in Marietta, Ohio; Plymouth Meeting, Pennsylvania; Elmhurst, Illinois; and Arlington, Virginia.